Professional Balance
Charger / Discharger

Manufactured by
SKYRC TECHNOLOGY CO.,LTD.
www.skyrc.com
All specifications and figures are subject to change without notice.
Printed in China
2011

SkyRC Technology Co., Ltd. 2011

Version 1.0

TABLE OF CONTENTSINTRODUCTION

Introduction................................................................................................................................................................02
Special Features.........................................................................................................................................................05
Warning And Safety Notes..........................................................................................................................................08
Program Flow Chart....................................................................................................................................................13
Lithium Polymer Balance Charge Program Connection Diagram..............................................................................15
Initial Parameter Petup (Users Set Up).......................................................................................................................17
Lithium Battery (LiIon/LiPo/LiFe) Program..................................................................................................................20
Charging Lithium Battery In The Charge Mode...........................................................................................................21
Charging Lithium Battery In The Balance Mode..........................................................................................................22
Charging Lithium Battery In The Fast Charge Mode....................................................................................................23
Charging Lithium Battery In The Storage Mode ..........................................................................................................24
Discharging Of Lithium Battery....................................................................................................................................25
Charging NiCd/NiMH Battery In The Charge Mode....................................................................................................26
Discharge Of NiCd/NiMH Battery...............................................................................................................................27
Charge/discharge And Discharge/Charge Cycle Of NiCd/NiMH Battery....................................................................28
Charging Pb (lead-acid) Battery In The Charge Mode................................................................................................29
Discharging Of The Pb Battery.....................................................................................................................................30
Storage Data Program................................................................................................................................................31
Load Data Program....................................................................................................................................................32
Various Information In The Program............................................................................................................................33
Warning And Error Message.......................................................................................................................................34
Recommended Accessories......................................................................................................................................35
Conformity Declaration...............................................................................................................................................36
Maximum Circuit Power Chart.....................................................................................................................................37
Specification...............................................................................................................................................................39
Liability Exclusion.......................................................................................................................................................40
Commonly Used Terms...............................................................................................................................................41
Warranty And Service...................................................................................................................................................42· 01

Ultimate 400W

Congratulations on your choice of the Ultimate 400W digital intelligent charger from SKYRC Technology
Co., Ltd. You are now the owner of a professional charger with battery management and integral balancer.
The unit is simple to use, but the operation of a sophisticated automatic charger such as the Ultimate 400W
does require some knowledge on the part of the user. These operating instructions are designed to ensurethat you quickly become familiar with its functions.
It is therefore important that you read right through the Operating Instructions, Warning and Safety Notes
before you attempt to use your new automatic charger for the first time. We hope you have many years ofpleasure and success with your new battery charger.
Ultimate 400W employs the circuit that features output power of 400 watts. It can charge or discharge up
15 cells of NiCd/NiMH or 6 series of Lithium batteries with maximum current of 20A. Ultimate 400W has anindividual cell voltage balancer, so it does not required any balancer separately when charging Lithium
batteries (LiPo/LiIon/LiFe) for voltage balancing.
The fan cooling system is so smart and efficiently. The fan speed is controlled by internal temperature
sensor.
Please BE SURE to read these instructions and Warning and Safety Notes before you use the charger for
the first time.
It can be dangerous to mishandle batteries and battery chargers, as there is always a risk of batteries
catching fire and exploding.

Ultimate 400W

02 ·

INTRODUCTIONINTRODUCTION

Please read this operating manual completely and attentively before using this product, as it covers a wide
range of information on operating and safety. Or please do use this product in company with a specialist!

Top View

Left View

Ventilation Fan

DC input 12V~18V

Right View

Lead-Acid
DC12V

LCD
ScreenNiMH/NiCd
1~15 cells

Ventilation Fan

Positive[+] Charger Output
Negative[-] Charger Output
Temperature
Probe Socket· 03

Membrane Switch

AC Power Supply
540Watt, DC12-18V

Lead Acid
2~20V

Temperature
Probe Socket

Universal
Balancing Port
Pitch=2.54mm

Ultimate 400W

Ultimate 400W

04 ·SPECIAL FEATURES

SPECIAL FEATURES
Internal independent lithium battery balancer
Ultimate 400W employs an individual-cell-voltage balancer. It is not necessary to connect an externalbalancer for balance charging.

Set contents
1

2Balancing individual cells battery discharging
During the process of discharging, Ultimate 400W can monitor and balance each cell of the battery
individually. Error message will be indicated and the process will be ended automatically if the voltage of any
single one cell is abnormal.

3

4

1. Ultimate 400W Charger
2. XH Adaptor

Adaptable to various type of lithium battery
Ultimate 400W is adaptable to various types of lithium batteries, such as Li-ion, LiPo and the new LiFe seriesof batteries.

3. Plug-in Battery Clamps

5

4. 18AWG Wire Charging Cable
5. Crocodile Clip Charging Cable

Special features
Optimized operating software
Ultimate 400W features the so-called AUTO function that set the feeding current during the process ofcharging or discharging. Especially for Lithium batteries, it can prevent the overcharging which may lead toan explosion due to the user's fault. It can disconnect the circuit automatically and alarm once detecting any
malfunction. All the programs of this product were controlled through two way linkage and communication,to achieve the maximum safety and minimize the trouble. All the settings can be configured by users!

· 05

Ultimate 400W

Fast and storage mode of lithium battery
Purposes to charge Lithium battery varies, fast charge reduce the duration of charging, whereas store state
can control the final voltage of your battery, so as to store for a long time and protect useful time of the battery.
Maximum safety
Delta-peak sensitivity: The automatic charge termination program based on the principle of the Delta-peakvoltage detection. When the battery's voltage exceeds the threshold, the process will be terminatedautomatically.
Automatic charging current limit
You can set up the upper limit of the charging current when charging your NiCd or NiMH battery; it is useful for
the NiMH battery of low impedance and capacity in the 'AUTO' charging mode.

Ultimate 400W

06 ·

WARNING AND SAFETY NOTESSPECIAL FEATURES
Capacity limit
The charging capacity is always calculated as the charging current multiplied by time. If the charging
capacity exceeds the limit, the process will be terminated automatically when you set the maximum value.

These warnings and safety notes are particularly important. Please follow the instructions for maximum
safety; otherwise the charger and the battery can be damaged or at worst it can cause a fire.

Temperature threshold
The battery internal chemical reaction will cause the temperature of the battery to rise. If the temperature
limit is reached, the process will be terminated.
This function is available by connecting temperature probe, which is not included in the package.

Never leave the charger unattended when it is connected to its power supply. If any malfunction isfound, Terminate THE PROCESS AT ONCE and refer to the operation manual.

Processing time limit
You can also limit the maximum process time to avoid any possible defect.

The allowable input voltage is 12~18V DC

Data store/load
For user’s convenience, it can store maximum 10 data of different batteries. You can establish
the data contains program setting of the battery to charge or discharge. These data can be calledback at any time you need and the process can be executed without program setting.
Cyclic charging/discharging
1 to 5 cyclic and continuous process of charge>discharge or discharge>charge is operable for battery
refreshing and balancing to stimulate the batterys activity.

Keep the charger well away from dust, damp, rain, heat, direct sunshine and vibration. Never drop it.

This charger and the battery should be put on a heat-resistant, noninflammable and nonconductive
surface. Never place them on a car seat, carpet or similar.
Keep all the inflammable volatile materials away from operating area.
Make sure you know the specifications of the battery to be charged or discharged to ensure it meetsthe requirements of this charger. If the program is set up incorrectly, the battery and charger may bedamaged .It can cause fire or explosion due to overcharging. This warranty is not valid for any damage
or subsequent damage arising as a result of a misuse or failure to observe the procedures outlined inthis manual.
Charge in an environment where the temperature range is between 10℃-30℃（50℉-86℉）.
Charging may not be as effective when performed in other environments.

· 07

Ultimate 400W

Ultimate 400W

08 ·

WARNING AND SAFETY NOTESWARNING AND SAFETY NOTESStandard Battery Parameters

Nominal Voltage
Max Charge Voltage
Storage Voltage
Min. Discharge Voltage

LiPo
3.7V/cell
4.2V/cell
3.8V/cell≧3.0V/cell

LiIon
3.6V/cell
4.1V/cell
3.7V/cell≧2.5V/cell

LiFe
Pb
MiMH
NiCd
3.3V/cell
1.2V/cell
1.2V/cell 2.0V/cell
3.6V/cell
1.5V/cell
1.5V/cell 2.46V/cell
3.3V/cell
n/a
n/a
n/a
≧2.0V/cell ≧0.85V/cell ≧1.0V/cell ≧1.75V/cell

Be very careful to choose the correct voltage for different types of battery otherwise you may cause damage
to the batteries. Incorrect settings could cause the cells to fire or explode.

Never attempt to charge or discharge the following types of batteries.
A battery pack which consists of different types of cells (including different manufacturers)
A battery that is already fully charged or just slightly discharged.
Non-rechargeable batteries (Explosion hazard).
Batteries that are require a different charge technique from NiCd, NiMh, LiPo or Gel cell(Pb, Lead acid).
A faulty or damaged battery.
A battery fitted with an integral charge circuit or a protection circuit.
Batteries installed in a device or which are electrically linked to other components.
Batteries that are not expressly stated by the manufacturer to be suitable for the currents
the charger delivers during the charge process.
Please bear in mind the following points before commencing charging:Did you select the appropriate program suitable for the type of battery you are charging?
Did you set up adequate current for charging or discharging?
Have you checked the battery voltage? Lithium battery packs can be wired in parallel andin series, i.e. a 2 cell pack can be 3.7V (in parallel) or 7.4V (in series).
Have you checked that all connections are firm and secure?
Make sure there are no intermittent contacts at any point in the circuit.
Charging
During charge process, a specific quantity of electrical energy is fed into the battery. The charge quantity is
calculated by multiplying charge current by charge time. The maximum permissible charge current varies
depending on the battery type or its performance, and can be found in the information by the battery
manufacturer. Only batteries that are expressly stated to be capable of quick-charge are allowed to be
charged at rates higher than the standard charge current.

· 09

Ultimate 400W

Ultimate 400W

10 ·

WARNING AND SAFETY NOTESWARNING AND SAFETY NOTESConnect the battery to the terminal of the charger: red is positive and black is negative. Due to thedifference between resistance of cable and connector, the charger can not detect resistance of the battery
pack, the essential requirement for the charger to work properly is that the charge lead should be ofadequate conductor cross-section, and high quality connectors which are normally gold-plated should be
fitted to both ends.
Always refer to the manual by the battery manufacturer pertaining to charging methods, recommended
charging current and charging time. Especially, the Lithium battery should be charged according thecharging instruction provided by the manufacturer strictly.
Attention should be paid to the connection of Lithium battery especially.
Do not attempt to disassemble the battery pack arbitrarily.
Please get highlighted that Lithium battery packs can be wired in parallel and in series. In the parallel
connection, the battery capacity is calculated by multiplying single battery capacity by the number of cellswith total voltage stay the same. The voltage imbalance may cause fire or explosion. Lithium battery is
recommended to charge in series.

· 11

Ultimate 400W

Discharging

The main purpose of discharging is to clean residual capacity of the battery, or to reduce thebattery voltage to a defined level. The same attention should be paid to the discharging process as
charging. The final discharge voltage should be set up correctly to avoid deep-discharging. Lithium
battery can not be discharged to lower than the minimum voltage, or it will cause a rapid loss of
capacity or a total failure. Generally, Lithium battery doesn’t need to be discharged. Please pay
attention to the minimum voltage of Lithium battery to protect the battery.
Some rechargeable batteries have a memory effect. If they are partly used and recharged before
the whole charge is accomplished, they remember this and will only use that part of their capacity
next time. This is a memory effect. It is said that NiCd and NiMH batteries are suffering from memory
effect. NiCd has more memory effect than NiMH.
Lithium batteries are recommended to be discharged partially rather than fully discharged. Frequent
full discharging should be avoided if possible. Instead, charge the battery more often or use abattery of larger capacity. Full capacity cannot be reached until it has been subjected to 10 or morecharge cycles. The cyclic process of charge and discharge will optimize the capacity of battery pack.

Ultimate 400W

12 ·

PROGRAM FLOW CHARTPROGRAM FLOW CHART

Continue on next page!
· 13

Ultimate 400W

Ultimate 400W

14 ·

LITHIUM POLYMER BALANCE CHARGE PROGRAM CONNECTION DIAGRAM

LITHIUM POLYMER BALANCE CHARGE PROGRAM CONNECTION DIAGRAM

CONNECTING THE CHARGER

Balance socket:

Ultimate 400W comes with male 4mm Bullet connectors attached to the power INPUT cables. These cables
are appropriate for attaching directly to most high-quality AC-DC power supply units, such as eFUEL model
PSU30A (18V, 30A). Also included are large Terminal Clips with matching 4mm female bullet connectors, forattaching directly to 12V car batteries. It is critically important that you use either a fully charged 13.8 carbattery or a high quality AC-DC power supply in the range of 12V to18V DC output, with minimum current
rating of 30A to insure reliable performance.

The balance wire attached to the battery must be connected to the charger with the black wire aligned with
the negative marking. Take care to maintain correct polarity! (Wiring diagram: see below.)

4mm Bullet
Connectors
plugging
to eFUEL power
supply directly

This diagram shows the correct way to connect your battery to the Ultimate 400W while charging in thebalance charge program mode only.

Using terminal
clip attaching tocar battery

6 5 4 3 2 1

+

S1

S2

S3

++

CONNECTING THE BATTERY
Important !!! Before connecting a battery it is absolutely essential to check one last time that you have set
the parameters correctly. If the settings are incorrect, the battery may be damaged, and could even burst
into flames or explode. To avoid short-circuits between the banana plugs, always connect the charge leads
to the charger first, and only then to the battery. Reverse the sequence when disconnecting the pack.

· 15

Ultimate 400W

WARNING:
Failure to connect as shown in this diagram will damage this charger.
To avoid short circuit between the charge lead always connect the charge cable to the charger first, thenconnect the battery. Reverse the sequence when disconnecting.

Ultimate 400W

16 ·

INITIAL PARAMETER SETUP (USERS SET UP)

INITIAL PARAMETER SETUP (USERS SET UP)

Initial parameter set up (Users set up)

DEC INC

Ultimate 400W will be operated with the default value of the essential user settings when it is connected
to a 12V battery for the first time. The screen displays the following information in sequence and the user
can change the value of parameter on each screen.
When you are willing to alter the parameter value in the program, press start/enter key to make it blink thenchange the value with Inc> or <Dec key. The value will be stored by pressing start/enter key once.

DEC INC
DEC INC

User set up starting screen.

INC

DEC INC
DEC

· 17

INC

The screen displays the nominal voltage of Lithium battery. There are three kinds ofLithium battery: LiFe(3.3V), Lilo(3.6V) or LiPo(3.7V). This is very important so you
have to check the battery carefully and set it up correctly. If it is different fromcorrect value the battery may be exploded during charge process.
Ultimate 400W recognize the cell count of Lithium battery automatically at the
beginning of charge or discharge process to avoid from erroneous setting by user.
But deeply discharged battery can be perceived incorrectly. To prevent the error,
you can set the time term to verify the cell count by the processor. Normally, 10
minutes are enough to perceive the cell count correctly. For the battery of larger
capacity, you may extend the time term. But if you set the time term too long for thebattery of smaller capacity, the charge or discharge process can be finished within
the time term with the erroneous cell count. This may cause the fatal result. If theprocessor recognizes the cell count incorrectly at the beginning of charge ordischarge process, you may extend the time. Otherwise, you had better use withthe default value.

Ultimate 400W

DEC INC
DEC INC

DEC INC

DEC INC

DEC INC

DEC INC

DEC INC
DEC INC

Termination of NiMH and NiCd battery, the effective value ranges from 5 to 20mV
per cell. If the trigger voltage is set higher, there is a danger of over charging thebattery; if it is set lower, there is a possibility of premature termi nation. Pleaserefer the technical specification of the battery. (NiCd default: 12mV, NiMH default:
7mV)

An optional feature using temperature probe contacting the surface of battery,the temperature cut-off can be on or off. If it is on, set the maximum temperature
at which the charger should allow battery to reach during charge. Once a battery
reaches this temperature during charge, the process will be terminated to protect
the battery.
The battery is on the cyclic process of charge and discharge can often become
warm after charge or discharge period. The program can insert a time delay tooccur after each charge and discharge process to allow the battery adequate
time to cool down before being subjected to the next process. The value ranges
from 1 to 60 minutes.
You can set the trickle charge mode on or off. If it is on, the charger willautomatically supply the trickle charge current to achieve the full charge without
overheating the battery after fast charge has been terminated.

Ultimate 400W

18 ·

INITIAL PARAMETER SETUP (USERS SET UP)

LITHIUM BATTERY (LILON/LIPO/LIFE) PROGRAM
Lithium battery (LiIon/LiPo/LiFe) program

DEC INC

DEC INC
DEC INC
DEC INC

DEC INC
DEC INC
DEC INC

When you start a charge process, the integral safety timer automatically starts
running at the same time. This is programmed to prevent overcharge the battery
if it proves to be faulty, or if the termination circuit cannot detect the battery full.
The value for the safety timer should be generous enough to allow a full chargeof the battery.

These programs are only suitable for charging and discharging Lithium batteries with a nominal voltage of
3.3V, 3.6V and 3.7V per cell. These batteries need to adopt different charge technique that is termed
constant current (CC) and a constant voltage (CV) method. The charge current varies according to thebattery capacity and performance.
V/A/AhThis program sets the maximum charge capacity that will be supplied to thebattery during charge. If the delta-peak voltage is not detected nor the safety
timer expired by any reason, this feature will automatically stop the process atthe selected capacity value.
The beep sounds at every time pressing the buttons to confirm your action. The
beep or melody sounded at various times during operation to alert different modechanges. These audible sounds can be turned on or off.

DEC INC
DEC INC

The Lithium polymer battery is charged at a constantcurrent until it reaches the final charge voltage of 4.2 V
per cell (B). After this point the voltage is kept at aconstant level, and the residual charge takes the formof a declining current curve (C) until the cut-off point(D) is reached. Charge current = C/10. At this point
the battery can be disconnected from the charger, andis ready for use.

You can adjust the brightness of LCD screen at the charger.

Ah

A

B

C

D

The final voltage of charge process is also very important; it should be precisely matched with the charged
voltage of the battery. They are 4.2V for LiPo, 4.1V for Lilo, and 3.6V for LiFe. The charge current andnominal voltage as for cell count set on the charge program must always be correct for the battery to be
charged.
When you are willing to alter the parameter value in the program, press start/enter key to make it blink thenchange the value with Inc> or <Dec key. The value will be stored by pressing start/enter key once.

DEC INC

· 19

4.2V

t

This program monitors the voltage of input battery. If the voltage drops below thevalue you set the operation forcibly terminated to protect the input battery.
DEC INC
DEC INC

V
A

Ultimate 400W

Ultimate 400W

20 ·

CHARGING LITHIUM BATTERY IN THE CHARGE MODE
Charging lithium battery in the charge modeThis charging mode is for charging Li-Po/Ion/Fe battery without balance lead.

- +

DEC

INC

Batt type
Stop

The left side of the first line shows the type of battery you choose.
The value on the left of the second line of the charger is current
user set. After setting the current and voltage, press START/ENTER- +DEC INC key for more than 3 seconds to start the process.(charge current:
Start >3 seconds 0.1-10.0A, voltage: 3.7-22.2V).

CHARGING LITHIUM BATTERY IN THE BALANCE MODE
Charging lithium battery in the balance modeThis function is for balancing the voltage of Lithium-polymer battery cells while charging. In the balancemode, the battery needs to have a balance lead to connect to the individual balance port of the charger. And
you need to connect the battery's power lead to the output of charger. Charging in this mode is different
from the normal modes, because the built-in processor monitors voltage of individual cell and control input
current fed into each cell to equalized voltage of individual cell.

Enter

Start
Enter

This displays the number of cells you set up and the processor
detects.R shows the number of cells detected by the charger and S is
the number of cells set by you at the previous screen. If both numbers
are identical you can start charging by press START/ENTER button. If
not, press BATT TYPE/STOP button to go back to previous screen
to carefully check the number of cells of the battery pack before going

- +

DEC

- +

INC

DEC

Batt type
Stop

INC

Start
>3 seconds
Enter

ahead.
Start
Enter

This screen shows the real-time status during charge process. Press BATTTYPE/STOP key once to stop the charge process.
Number Charging
Batteryofvoltage Charged
time
capacity
cells
Charging

Number Charging
Batteryofvoltage Charged
time
capacity
cells
Charging

current

The left side of the first line shows the type of battery you choose.The
value on the left of the second line of the charger is current user set.
After setting the current and voltage, press START/ENTER key formore than 3 seconds to start the process.(charge current: 0.1-20.0A,
voltage: 3.7-22.2V).
This displays the number of cells you set up and the processor
detects.R shows the number of cells detected by the charger and S is thenumber of cells set by you at the previous screen. If both numbers are
identical you can start charging by press START/ENTER button. If not,press BATT TYPE/STOP button to go back to previous screen to
carefully check the number of cells of the battery pack before goingahead.
This screen shows the real-time status during charge process. Press BATTTYPE/STOP key once to stop the charge process.

current· 21

Ultimate 400W

Ultimate 400W

22 ·

CHARGING LITHIUM BATTERY IN THE FAST CHARGE MODE

Charging lithium battery in the storage mode

Charging lithium battery in the fast charge mode
The charging current is getting smaller as the process goes to the near end term of Lithium battery
charging. To finish charging process earlier, this program eliminate certain term of CV process. Actually, thecharging current will goes to 1/5 from the initial value to end the process while the normal charging goes to
1/10 during CV term. The charging capacity may be a bit smaller than normal charging but the process time
will be reduced.

DEC

+
INC
Batt type
Stop

DEC

+
INC

Start
>3 seconds
Enter

Start
Enter

Supplied
Charging
capacity
Number timeofChargecells
current· 23

Current
voltagebattery

CHARGING LITHIUM BATTERY IN THE STORAGE MODE
This is for charging or discharging Lithium battery not to be used for the time being. The program will
determine to charge or discharge the battery to the certain voltage depending on the voltage of the battery
at its initial stage. They are different from the type of the battery, 3.75V for LiIo, 3.85V for LiPo and 3.3V for
LiFe per cell. If the voltage of battery at its initial stage is over the voltage level to storage, the program will
start to discharge.

The value on the left side of the second lines sets the charge current. The
value on the right side of the second lines sets the battery pack's voltage.
After setting current and voltage, press STAR/ENTER for more than 3
seconds to start the process.

At this screen, you can set up the current and voltage of the battery
pack. Charging and discharging will make the batteries come to thevoltage level of storage state.
- +This displays the number of cells you set up and the processor
detects.R shows the number of cells detected by the charger and S is
the number of cells set by you at the previous screen. If both
numbers are identical you can start charging by press START/ENTER
button. If not, press BATT TYPE/STOP button to go back toprevious screen to carefully check the number of cells of the battery
pack before going ahead.
This screen shows the real-time status during charge process. Press
BATT TYPE/STOP key once to stop the charge process.

Ultimate 400W

DEC

INC
Batt type
Stop

- +
DEC

INC

Start
>3 seconds
Enter

This screen shows the real-time status charging.
TYPE/STOP key once to stop the charge process.

Press

BATT

Current
Number Elapsed Supplied voltage
capacity
timeofbattery
Chargecells
or discharge
current

Ultimate 400W

24 ·

DISCHARGING OF LITHIUM BATTERYCHARGING NICD/NIMH BATTERY IN THE CHARGE MODE

Discharging of lithium battery

- +
DEC

INC

Batt type
Stop

- +
DEC

INC

Start
Enter >3 seconds

Charging NiCd/NiMH battery in the charge mode

The value of discharge current on the left can not exceed 1C, and the valueon the right can not be under the voltage recommended by the manufacturer
to avoid deep discharging. Press START/ENTER for more than 3 seconds tostart discharging.

This program charge the battery using the current you set up. In the auto state,you should set up the upper
limit of the charge current to avoid damage by excessive feeding current. Some batteries of low resistanceand capacity can lead to higher current in the auto charging mode. But in the manual mode, it will charge
with the current you set. You can make it blink in the current field and press INC and DEC simultaneously toswap between Auto and Manual Mode. NOTE: Allowable fast charge current: 1C-2C

This shows the real-time status of discharging, you can press BATTTYPE/STOP key to stop discharging.
Discharged
Number elapsed
Battery capacity
timeofvoltagedischarge
cells
current

Voltage balancing and monitoring in the discharge process
The processor monitors voltage of each cell when the battery packs are during its storage anddischarging process. If voltage of any cell is abnormal, Ultimate 400W will show error message andterminate the program forcibly. So if there is battery damage or disconnection, you can see the error
message and press INC to know which cell is damaged.
The processor detects voltage of one cell is too low.

- +
DEC

INC

Batt type
Stop

- +

This program is for charging of NiCd/NiMH batteries associated with R/Cmodels applications. You can press START/ENTER key to make it blink andthen INC or DEC to change the parameter value. Press START/ENTER key tostore the value.

DEC INCStart>3 seconds
Enter

The screen shows the real-time status. Press BATT TYPE/STOP key to end
the program. The sound will emitted to indicates the end of program.
Battery
ElapsedBattery time Charge voltage Charged
type
capacity
current

INC

The 4th cell was damaged. The value of voltage may be zero if disconnection
occurs.

· 25

Ultimate 400W

Ultimate 400W

26 ·

DISCHARGE OF NICD/NIMH BATTERYCHARGE/DISCHARGE AND DISCHARGE/CHARGE CYCLE OF NICD/NIMH BATTERY

Discharge of NiCd/NiMH battery

Charge/discharge and discharge/charge cycle of NiCd/NiMH battery

Set discharge current on the left and the final voltage on the right. Rangeof the discharge current is 0.1-5.0A; range of final voltage is 0.1-25.0V.
Press START/ENTER key for more than 3 seconds to start the program.
- +
DEC

INC

- +
DEC

You can set up sequence on the left and the number of cycles on theright. Range of the cycle number is 1-5.

- +

INC

DEC
Batt type
Stop

Start >3 seconds
Enter

INC

Batt type
Stop

- +
DEC

INC

Start
>3 seconds
Enter

The screen indicates the discharging state. You can press START/ENTER
key to alter discharge current. Press START/ENTER again to store thevalue. Press BATT TYPE/STOP key to stop discharging. The emitted soundalerts the end of discharging.

Press BATT TYPE/STOP key to stop program, you can press
START/ENTER key to alter charge current. The sound indicates theend of program.
Battery Discharged
ElapsedBattery time
voltage or charged
type
capacity
Discharge
or charge
current

Battery
Battery Elapsed
voltage Discharged
time
type
capacity
Discharge
current

When it approaches to the end, you can see the capacity of thebattery being charged or discharged. You can press INC or DEC key
to display result of each cycle.

· 27

Ultimate 400W

Ultimate 400W

28 ·

CHARGING PB (LEAD-ACID) BATTERY IN THE CHARGE MODE
Charging Pb (lead-acid) battery in the charge mode

DISCHARGING OF THE PB BATTERY
Discharging of the Pb battery

This program is only suitable for charging Pb（ lead-acid） battery with nominal voltage from 2 to 20V. Pb（ lead-acid） battery is completely different from NiCd/NiMH battery. These batteries can only delivercurrent lower in comparison to their capacity. The same restriction applies to the charging process.
Consequently, the optimum charge current can only be 1/10 of the capacity. Pb battery can not be used forfast-charging, please follow the instructions provided by the battery manufacturer.Due to the chemistrycharacteristic of Pb battery, the cut off point may be difficult to detect sometimes. We recommend user to
use CAPACITY CUT OFF feature to protect the battery. You can press START/ENTER key to make it blink
and alter the value of parameters using INC or DEC key, press START/ENTER key to store the value.

- +
DEC

INC

Batt type
Stop

Set up the charge current on the left and nominal voltage on the right. Rangeof current is 0.1-20A, the voltage should match the battery being charged.
Press START/ENTER key for more than 3 seconds to start charging.
- +
DEC

INC

Batt type
Stop

INC

Start
Enter >3 seconds

The screen displays the real-time discharging status. Press START/ENTER
key to alter discharge current. Press START/ENTER key again to store theparameter value you set. Press BATT TYPE/STOP key to end the program.
Battery
Battery Elapsedtime
voltage Discharged
type
capacity
Discharge
current

- +
DEC

- +
DEC

Set up the discharge current on the left and nominal voltage on the right.
Range of discharge current is 0.1-5A, the voltage should match the battery
being charged. Press START/ENTER key for more than 3 seconds to start
charging.

INC

Start >3 seconds
Enter

The screen displays the real-time discharging status. Press START/ENTER
key to alter discharge current. Press START/ENTER key again to store theparameter value you set. Press BATT TYPE/STOP key to end the program.
Battery
Battery Elapsed
voltagetime
type
Chargecurrent· 29

Chargedcapacity

Ultimate 400W

Ultimate 400W

30 ·

STORAGE DATA PROGRAM

LOAD DATA PROGRAM

Storage data program

DEC INC

For your convenience, Ultimate 400W has a data storage and load program. It can store ten batteries data
representing the respective specifications of batteries. You can call back the data when charging ordischarging without setting up the program again. Press START/ENTER key to make it blink, and use INC
or DEC to set up the parameter.

Set up the charge/ discharge sequence and cycle number.
- +

DEC

INC

- +
DEC INC
Start >3 seconds
Enter

Saving the data
Start
Enter

Data
Capacity Type of
Voltage number
battery

Batt type Start >3 seconds
Enter
stop

DEC INC- +Setting of the parameter in the screen will not affect the charge anddischarge process. They just present the specification of the battery. The
example is NiMH battery pack, including 12 cells, which the capacity is
3000m Ah.
Set up the charge current in the manual mode, or current limit in the automode. Press INC and DEC key simultaneously to make the current field blinkto switch the charge mode.

Start
Enter

Set up the discharge current and final voltage.

Start>3 seconds
Enter

Choose the data number you want to call back. The data you want to call backwill be displayed.

DEC INC- +- +DEC INC
DEC INC
DEC INC· 31

Load data programThis program is to load the date stored at the save data program. Press START/ENTER key to make thedata field blink and press INC or DEC for more than 3 seconds to load the data.

Loading the data.

Ultimate 400W

Ultimate 400W

32 ·

VARIOUS INFORMATION IN THE PROGRAMWARNING AND ERROR MESSAGE

Various information in the program
You can inquire the variety of information during the process of charging and discharging on the LCD
screen.Press DEC key, the charger will display users’ setting. You can press INC key to monitor voltage ofeach cell while the batteries balance lead is connected to the charger.
It comes to the final voltage when the program ended.

Ultimate 400W incorporates a various functions of protective and monitoring the system to verify functions
and the state of its electronics. In any case of occurring error, the screen displays the cause of error that is
self-explanatory with audible sound.

Incorrect polarity connected.
Battery connection is interrupted.
Short-circuit of the output termination.

Displayed capacity cut-off function is turn on and the setting value of capacity.
Displayed safety timer is turn on and duration of time in minutes.

Input voltage wrong.
The voltage of the battery pack has been selected incorrectly!
The charger has malfunctioned for some reason. Seek professional advice.

Displayed temperature cut-off function is turn on.

The voltage is lower than which is set. Please check the number of cells in the battery pack.

The external temperature is displayed when the temperature probe is used.

The voltage is higher than which is set. Please check the number of cells in the battery pack.
Voltage of one cell in the battery pack is too low; please check the voltage of each cell.

Present input voltage.
Voltage of one cell in the battery pack is too high; please check the voltage of each cell.
The battery is connected with balance lead. You can check voltage of each cell in thebattery pack.

The internal temperature of the unit goes too high. Cool down the unit.

C5:4.18 C6:4.15V
C7:0.00 C8:0.00V· 33

Wrong connection of the connector detected; please check the connector and cable.

The processor cannot control the feeding current, please repair it.

Ultimate 400W

Ultimate 400W

34 ·

RECOMMENDED ACCESSORIESCONFORMITY DECLARATION
Ultimate 400W satisfy all relevant and mandatory EC directives and FCC Part 15 Subpart B: 2008 .

For EC directives:
The product has been tested to meet the following technical standards:

30A 540Watt DC
Power Supply

Temperature
Sensor Cable

EH Adaptor

XH Adaptor

HP/PQ Adaptor

EN55014-2:1997+A1:2001+A2:2008

TP/FP Adaptor

Dean charging cable

Tamiya charging
cable

Glow charging cable Bullet charging cable EC3 charging cable· 35

TRAXXAS charging
cable

Crocodile clip
charging cable

JST/BEC charging
cable

Futaba RX
charging cable

Ultimate 400W

This symbol means that you must dispose of electrical from theGeneral household waste when it reaches the end of its useful life.
Take your charger to your local waste collection point or recycling centre.
This applies to all countries of the European Union, and to other European
countries with a separate waste collection system.

Ultimate 400W

36 ·

MAXIMUM CIRCUIT POWER CHART

MAXIMUM CIRCUIT POWER CHART

Maximum circuit power chart
The actual amount of charge current feeding to the battery is automatically be limited to 400 Watts, so not toexceed the charger's maximum rated charging power.
The maximum discharge power is approximately 25 Watts. The discharge current delivered to the charger islimited by charger's internal thermal sensor for maximum discharge current. If the internal temperature over
80 Celsius, the charger will be cut off and "TEMP OVER ERR" will show on the LCD. In this case, pleasedecrease discharging current.
Please refer following chart for maximum charging/discharging current.

LiFe

NiCd/NiMH

For the maximum charging rate, please follow battery manufacturer’s instruction strictly.

Charge Current (A)Charging Power 400W

Battery
Type
LiPo

LiIon

· 37

1S
2S
3S
4S
5S
6S
1S
2S
3S
4S
5S
6S

3.7
7.4
11.1
14.8
18.5
22.2
3.6
7.2
10.8
14.4
18.0
21.6

4.2
8.4
12.6
16.8
21.0
25.2
4.1
8.2
12.3
16.4
20.5
24.6

20.0
20.0
20.0
20.0
19.0
16.0
20.0
20.0
20.0
20.0
19.0
16.0

Ultimate 400W

5.0
3.0
2.0
1.5
1.2
1.0
5.0
3.0
2.0
1.5
1.2
1.0

Charge Current (A)Charging Power 400W

Battery
Type
1S
2S
3S
4S
5S
6S
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Pb

Ultimate 400W

3.3
6.6
9.9
13.2
16.5
19.8
2.4
3.6
4.8
6.0
7.2
8.4
9.6
10.8
12.0
13.2
14.4
15.6
16.8
18.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
20.0

3.6
7.2
10.8
14.4
18.0
21.6
3.0
4.5
6.0
7.5
9.0
10.5
12.0
13.5
15.0
16.5
18.0
19.5
21.0
22.5
7.4
9.8
12.3
14.8
17.2
19.7
22.1
24.6

20.0
20.0
20.0
20.0
20.0
18.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
19.0
18.0
20.0
20.0
20.0
20.0
20.0
20.0
18.0
16.0

5.0
3.5
2.3
1.7
1.4
1.2
5.0
5.0
4.2
3.3
2.8
2.4
2.1
1.9
1.7
1.5
1.4
1.3
1.2
1.1
3.4
2.5
2.0
1.7
1.5
1.3
1.1
1.0

38 ·

SPECIFICATIONLIABILITY EXCLUSION

Specification· 39

Important Notice

DC input

12-18Volt

Charger circuit power

400W

Charge current range

0.1-20A

Discharge current range

0.1-5A

Current drain for balancing port

300mA/cell

NiCd/NiMH battery cell count1-15Cells

LiPo/LiFe/Lilon cell count1-6Cells

Pb battery voltage

2-20V

Operating temperature

5℃-35℃（41℉-95℉）

Net weight

821g

Dimension

150×142×55mm

To take advantage of Ultimate 400W’s full power capability, the powersource should be 15V-18V DC, and output power should be capable of500W or higher.
Low quality DC power source may damage your Ultimate 400W charger.
We recommend you to choose our PSU30A, 540W DC power supply.

Liability exclusion
This charger is designed and approved exclusively for use with the types of battery stated in this Instruction
Manual. SkyRC accepts no liability of any kind if the charger is used for any purpose other than that stated.
We are unable to ensure that you follow the instructions supplied with the charger, and we have no control
over the methods you employ for using, operating and maintaining the device. For this reason we are
obliged to deny all liability for loss, damage or costs which are incurred due to the incompetent or incorrect
use and operation of our products, or which are connected with such operation in any way.Unless otherwiseprescribed by law, our obligation to pay compensation, regardless of the legal argument employed, is limited
to the invoice value of those SkyRC products which were immediately and directly involved in the event inwhich the damage occurred.

Ultimate 400W

Ultimate 400W

40 ·

COMMONLY USED TERMSWARRANTY AND SERVICE

Commonly used terms
Final charge voltage: the voltage at which the battery's charge limit (capacity limit) is reached. The charge
process switches from a high current to a low maintenance rate (trickle charge) at this point. From this pointon further high current charging would cause overheating and eventual terminal damage to the pack.
Final discharge voltage: the voltage at which the battery's discharge limit is reached. The chemicalcomposition of the batteries determines the level of this voltage. Below this voltage the battery enters thedeep discharge zone. Individual cells within the pack may become reverse polarized in this condition, andthis can cause permanent damage.
A, mA: unit of measurement relating to charge or discharge current. 1000 mA = 1 A (A=Ampere,mA=Milliampere)Ah, mAh: unit of measurement for the capacity of a battery (Amperes x time unit; h = hour). If a pack ischarged for one hour at a current of 2 A, it has been fed 2 Ah of energy. It receives the same quantity ofcharge (2 Ah) if it is charged for 4 hours at 0.5 A, or 15 minutes (=1/4 h) at 8 A.
'C'-rating: Capacity is also referred to as the 'C' rating. Some battery suppliers recommend charge anddischarge currents based on the battery 'C' rating. A battery's '1C' current is the same number as thebattery's rated capacity number, but noted in mA or amps. A 600mAh battery has a 1C current value of
600mA, and a 3C current value of (3 x 600mA) 1800mA or 1.8A. The 1C current value for a 3200mAhbattery would be 3200mA (3.2A).

· 41

Ultimate 400W

Nominal voltage(V): The nominal voltage of the battery pack can be determined as follows;-.NiCd or NiMH: multiply the total number of cells in the pack by 1.2. A 8-cell pack will have a nominal
voltage of 9.6 volts (8x1.2).
-.LiPo: multiply the total number of cells in the pack by 3.7. A 3-cell LiPo wired in series will have a nominal
voltage of 11.1 volts (3x3.7).
-.LiIo: multiply the total number of cells in the pack by 3.6. A 2-cell LiIo wired in series will have a nominal
voltage of 7.2 volts (2x3.6).
-.LiFe: multiply the total number of cells in the pack by 3.3. A 4-cell LiIo wired in series will have a nominal
voltage of 13.2 volts (4x3.3).
If the nominal voltage of the battery is not printed on the battery's label, consult your battery manufacturer or
supplier. Do not guess the rated voltage of battery.

Warranty and service
We guarantee this product to be free of manufacturing and assembly defects for a period of one year fromthe time of purchase. The warranty only applies to material or operational defects, which are present at t hetime of purchase. During that period, we will repair or replace free of service charge for products deemed
defective due to those causes.
You will be required to produce proof of purchase (invoice or receipt). This warranty is not valid forany damage or subsequent damage arising as a result of misuse, modification or as a result of failure toobserve the procedures outlined in this manual.

Ultimate 400W

42 ·