B6 Ultimate
Professional Balance Charger/Discharger

SkyRC Technology Co., Ltd. 2010

Version 1.0

TABLE OF CONTENTS
Introduction...............................................................................................................................................02
Special features........................................................................................................................................05
Warning and safety notes........................................................................................................................09
Program flow chart...................................................................................................................................14
Lithium polymer balance charge program connection diagram.............................................................16
Initial parameter setup (users set up)......................................................................................................18
Lithium battery (LiIon/LiPo/LiFe) program .................................................................................................21
Charging lithium battery in the charge mode..........................................................................................22
Charging lithium battery in the balance mode........................................................................................23
Charging lithium battery in the fast charge mode...................................................................................24
Charging lithium battery in the storage mode ........................................................................................25
Discharging of lithium battery..................................................................................................................26
Charging NiCd/NiMH battery in the charge mode.................................................................................27
Discharge of NiCd/NiMH battery............................................................................................................28
Charge/discharge and discharge/charge cycle of NiCd/NiMH battery.................................................29
Charging Pb (lead-acid) battery in the charge mode.............................................................................30
Discharging of the Pb battery..................................................................................................................31
Storage data program.............................................................................................................................32
Load data program..................................................................................................................................33
Various information in the program.........................................................................................................34
Warning and error message....................................................................................................................35
Recommended accessories...................................................................................................................36
Conformity declaration.............................................................................................................................37
Maximum circuit power chart..................................................................................................................38
Specification.............................................................................................................................................40
Commonly used terms.............................................................................................................................41
Warranty and service...............................................................................................................................4201

INTRODUCTION
Congratulations on your choice of the iMAX B6 Ultimate digital intelligent charger from SKYRC
Technology Co., Ltd. You are now the owner of a compact charger with battery management andintegral balancer.
The unit is simple to use, but the operation of a sophisticated automatic charger such as the iMAX B6
Ultimate does require some knowledge on the part of the user. These operating instructions aredesigned to ensure that 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 of pleasure and success with your new battery charger.
IMAX B6 Ultimate employs the circuit that features output power of 200 watts. It can charge ordischarge up 18 cells of NiCd/NiMH or 6 series of Lithium batteries with maximum current of 10A.
B6 Ultimate has an individual 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 mis-handle batteries and battery chargers, as there is always a risk of batteries
catching fire and exploding.

02

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

Ventilation Fan

Contact-less Key
SwitchTemperature
Probe Socket

LCD Screen

OutputCharging

DC Input 11V~18V
USB Power Supply 5V/1A

Universal
Balancing Port
Pitch=2.54mm

PC Link Socket

03INTRODUCTION

Connection Diagram

Temperature
Probe Socket

04

SPECIAL FEATURES
Set contents
1. iMAX B6 Ultimate Charger

1

2. XH Adaptor
3. Temperature Probe2

4. Crocodile Clip Charging Cable
5. 18AWG Wire Charging Cable
6. Charger Monitor Program Disk
3

7. USB Cable
4

8. Plug-in Battery Clamps
5

6

7

8

Special features
Optimized operating software
iMAX B6 Ultimate features the so-called AUTO function that set the feeding current during the processof charging or discharging. Especially for Lithium batteries, it can prevent the overcharging which maylead to an 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

SPECIAL FEATURES
Internal independent lithium battery balancer
iMAX B6 Ultimate employs an individual-cell-voltage balancer. It isn’t necessary to connect anexternal balancer for balance charging.
Balancing individual cells battery discharging
During the process of discharging, iMAX B6 Ultimate can monitor and balance each cell of the battery
individually. Error message will be indicated and the process will be ended automatically if thevoltage of any single one cell is abnormal.
Adaptable to various type of lithium battery
iMAX B6 Ultimate is adaptable to various types of lithium batteries, such as Li-ion, LiPo and the new
LiFe series of batteries.
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-peak voltage detection. When the battery's voltage exceeds the threshold, theprocess will be terminated automatically.
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.

06

SPECIAL 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.
Temperature threshold
The battery’s internal chemical reaction will cause the temperature of the battery to rise. If thetemperature limit is reached, the process will be terminated.
This function is available by connecting temperature probe, which is included in the package.
Processing time limit:
You can also limit the maximum process time to avoid any possible defect.

Data store/load
For users 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 battery’s activity.

PC based analysis using USB Communication
The B6 Ultimate is fitted with a mini USB port on the right-hand side of the case; a USB wire can beconnected to this socket in order to link the charger to a PC.
Program enable you
to view graphs of charge and discharge curves, with a capacity, voltage, temperature and ampere display,and individual curves can be individually suppressed or superimposed to allow a visual comparison of the
data.

07

SPECIAL FEATURES
PC based analysis using USB
Communication

USB Power Supply

USB Power Supply
The USB power supply can provide 5V, 1A continue current. You can power your mobile phone, digital
camera or even your IPod via the USB power supply.

08

WARNING AND SAFETY NOTES
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 cancause a fire.

Never leave the charger unattended when it is connected to its power supply. If any malfunction
is found, TERMINATE THE PROCESS AT ONCE and refer to theoperation manual.
Keep the charger well away from dust, damp, rain, heat, direct sunshine and vibration.
Never drop it.
The allowable input voltage is 11~18V DCThis charger and the battery should be put on a heat-resistant, noninflammable andnonconductive 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
meets the requirements of this charger. If the program is set up incorrectly, the battery andcharger may be damaged .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 toobserve the procedures outlined in this manual.

09

WARNING AND SAFETY NOTESStandard Battery Parameters
LiIon
LiPo
LiFe
Pb
MiMH
NiCd
Nominal Voltage
3.7V/cell 3.6V/cell 3.3V/cell 1.2V/cell 1.2V/cell 2.0V/cell
Max Charge Voltage 4.2V/cell 4.1V/cell 3.6V/cell 1.5V/cell 1.5V/cell 2.46V/cell
Storage Voltage
3.8V/cell 3.7V/cell 3.3V/cell n/an/an/aAllowable Fast Charge 1C
1C
4C
1C-2C
1C-2C
0.4C
Min. Discharge Voltage 3.0V/cell 2.5V/cell 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.

10

WARNING AND SAFETY NOTESNever 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 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 canbe 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 thestandard charge current.

11

WARNING AND SAFETY NOTESConnect the battery to the terminal of the charger: red is positive and black is
negative. Due to the difference between resistance of cable and connector, thecharger can not detect resistance of the battery pack, the essential requirement
for the charger to work properly is that the charge lead should be of adequate
conductor cross-section, and high quality connectors which are normally goldplated 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, theLithium battery should be charged according the charging 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 inseries. In the parallel connection, the battery’s capacity is calculated bymultiplying single battery’s capacity by the number of cells with total voltage
stay the same. The voltage’s imbalance may cause fire or explosion .Lithium
battery is recommended to charge in series.

12

WARNING AND SAFETY NOTES
Discharging
The main purpose of discharging is to clean residual capacity of the battery, or to reducethe battery’ 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 deepdischarging. 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 partof 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 a battery of larger capacity. Full capacity cannot bereached until it has been subjected to 10 or more charge cycles. The cyclic process ofcharge and discharge will optimize the capacity of battery pack.

13

PROGRAM FLOW CHART

Continue on next page!

14

PROGRAM FLOW CHART

15

LITHIUM POLYMER BALANCE CHARGE PROGRAM
CONNECTION DIAGRAM
CONNECTING THE CHARGER
IMAX B6 Ultimate 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 PSU20A (13.8V, 20A). Also included are large Terminal Clips with matching
4mm female bullet connectors, for attaching directly to 12V car batteries. It is critically important thatyou use either a fully charged 13.8 car battery or a high quality AC-DC power supply in the range of 11V
to18V DC output, with minimum current rating of 20A to insure reliable performance.

4mm Bullet
Connectors
plugging
to eFUEL power
supply directly

Using terminal
clip attaching tocar battery

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.

16

LITHIUM POLYMER BALANCE CHARGE PROGRAM
CONNECTION DIAGRAM
Balance socket:
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.)This diagram shows the correct way to connect your battery to the iMAX B6 Ultimate while charging
in the balance charge program mode only.

1 2 3 4 5 6

S3

++

S1

S2

+

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, then connect the battery. Reverse the sequence when disconnecting.

17

INITIAL PARAMETER SETUP (USERS SET UP)
Initial parameter set up (Users set up)
IMAX B6 Ultimate 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 itblink then change the value with Inc> or <Dec key. The value will be stored by pressing start/enter
key once.
User setup starting screen.

INC

DEC INC
DEC

INC

The screen displays the nominal voltage of Lithium battery. There are threekinds of Lithium 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 from correct value the battery may be exploded during charge
process.
IMAX B6 Ultimate recognize the cell count of Lithium battery automatically atthe beginning of charge or discharge process to avoid from erroneous setting byuser. But deeply discharged battery can be perceived incorrectly. To prevent theerror, 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 the processor 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.

18

INITIAL PARAMETER SETUP (USERS SET UP)
DEC INC

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 overcharging the battery; if it is set lower, there is a possibility of premature termi
nation. Please refer 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 abattery reaches this temperature during charge, the process will be terminatedto 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 atime delay to occur after each charge and discharge process to allow thebattery 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 will automatic
ally supply the trickle chargecurrent to achieve the full charge without overheating
the battery after fast charge has been terminated.

DEC INC
DEC INC

19

INITIAL PARAMETER SETUP (USERS SET UP)
DEC INC

DEC INC
DEC INC
DEC INC

DEC INC
DEC INC
DEC INC

When you start a charge process, the integral safety timer automaticallystarts 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 toallow a full charge of the battery.
This program sets the maximum charge capacity that will be supplied to thebattery during charge. If the delta-peak voltage is not detected nor thesafety timer expired by any reason, this feature will automatically stop theprocess at the 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 dif
ferent mode changes. These audible sounds can be turned on or off.

DEC INC
DEC INC

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

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

DEC INC

20

LITHIUM BATTERY (LILON/LIPO/LIFE) PROGRAM
Lithium battery (LiIon/LiPo/LiFe) program
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 techniquethat is termed constant current (CC) and a constant voltage (CV) method. The charge current varies
according to the battery capacity and performance.
V/A/AhV

The Lithium battery is charged at a constantcurrent until it reaches the final charge voltageof 4.2 V per cell (B). After this point the voltage
is kept at a constant level, and the residual
charge takes the form of 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, and isready for use.

4.2V

A

Ah

A

B

C

D
t

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 and nominal voltage as for cell count set on the charge program must always be correct forthe battery to be charged.
When you are willing to alter the parameter value in the program, press start/enter key to make itblink then change the value with Inc> or <Dec key. The value will be stored by pressing start/enter
key once.

21

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

DEC

Batt type
Stop

INC

Start ‘>3 seconds’
Enter

Start
Enter

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
for more than 3 seconds to start the process.(charge current: 0.110.0A, 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 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 thebattery 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.

Number Charging
Batteryofvoltage Charged
time
capacity
cells
Charging
current

22

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 isdifferent from the normal modes, because the built-in processor monitors voltage of individual cell andcontrol input current fed into each cell to equalized voltage of individual cell.

- +

DEC

- +

INC

DEC

Batt type
Stop

INC

Start
‘>3 seconds’
Enter

Start
Enter

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, Aftersetting the current and voltage, press START/ENTER key for more than 3
seconds to start the process.(charge current: 0.1-10.0A, voltage: 3.722.2V).
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 going ahead.
This screen shows the real-time status during charge process. Press
BATT TYPE/STOP key once to stop the charge process.

Number Charging
Batteryofvoltage Charged
time
capacity
cells
Charging
current

23

CHARGING LITHIUM BATTERY IN THE FAST CHARGE 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, the charging current will goes to 1/5 from the initial value to end the process while thenormal charging goes to 1/10 during CV term. The charging capacity may be a bit smaller thannormal charging but the process time will be reduced.

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.

- +
DEC

INC
Batt type
Stop

- +
DEC

INC

This displays the number of cells you set up and the processor detects.
Start‘>3 seconds’Enter“R” shows the number of cells detected by the charger and “S” is the

Start
Enter

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 goingahead.
This screen shows the real-time status during charge process. Press
BATT TYPE/STOP key once to stop the charge process.

Charging Supplied Current
Number time
capacity voltage
batteryofChargecells
current

24

CHARGING LITHIUM BATTERY IN THE STORAGE MODE
Charging lithium battery in the storage modeThis 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 ofthe 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.

At this screen, you can set up the current and voltage of the battery pack.
Charging and discharging will make the batteries come to the voltage
level of “storage” state.
- +
DEC

INC
Batt type
Stop

- +
DEC

INC

Start
Enter ‘>3 seconds’

This screen shows the real-time status charging. Press BATTTYPE/STOP key once to stop the charge process.
Current
NumberElapsed Supplied voltage
capacity
timeofbattery
Chargecells
or discharge
current

25

DISCHARGING OF LITHIUM BATTERY
Discharging of lithium battery

- +
DEC

INC

Batt type
Stop

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

- +
DEC

INC

Start
Enter ‘>3 seconds’

This shows the real-time status of discharging, you can press BATTTYPE/STOP key to stop discharging.
Discharged
Number elapsed
Battery capacity
timeofdischargevoltage
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” and“discharging” process. If voltage of any cell is abnormal, iMAX B6 Ultimate will show error message
and terminate the program forcibly. So if there is battery damage or disconnection, you can see theerror message and press INC to know which cell is damaged.
The processor detects voltage of one cell is too low.
INC

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

26

CHARGING NICD/NIMH BATTERY IN THE CHARGE MODE
Charging NiCd/NiMH battery in the charge modeThis 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 batteriesof low resistance and 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 andpress INC and DEC simultaneously to swap between Auto and Manual Mode. NOTE: Allowable fast
charge current: 1C-2C

- +
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 blinkand then INC or DEC to change the parameter value. Press
START/ENTER key to store the value.

DEC INC
Start
Enter ‘>3 seconds’

Battery
ElapsedBattery time Chargevoltage Charged
type
capacity
current

The screen shows the real-time status. Press BATT TYPE/STOP key toend the program. The sound will emitted to indicates the end of program.

27

DISCHARGE OF NICD/NIMH BATTERY
Discharge 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

Batt type
Stop

- +
DEC

INC

Start
Enter ‘>3 seconds’

The screen indicates the discharging state. You can press
START/ENTER key to alter discharge current. Press START/ENTER
again to store the value. Press BATT TYPE/STOP key to stopdischarging. The emitted sound alerts the end of discharging.
Battery
Battery Elapsed
voltage Discharged
time
type
capacity
Discharge
current

28

CHARGE/DISCHARGE AND DISCHARGE/CHARGE CYCLE OF NICD/NIMH BATTERY
Charge/discharge and discharge/charge cycle of NiCd/NiMH battery
You can set up sequence on the left and the number of cycles on theright. Range of the cycle number is 1-5.

- +
DEC

INC

Batt type
Stop

- +
DEC

INC

Start
‘>3 seconds’Enter

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

29

CHARGING PB (LEAD-ACID) BATTERY IN THE CHARGE MODE
Charging Pb (lead-acid) battery in the charge modeThis program is only suitable for charging Pb lead-acid battery with nominal voltage from 2 to 24V.
Pb lead-acid battery is completely different from NiCd/NiMH battery. These batteries can only
deliver current 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 for fast-charging, please follow the instructions provided by the battery manufacturer.
Due to the chemistry characteristic 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

- +
DEC

Set up the charge current on the left and nominal voltage on the right.
Range of current is 0.1-10.0A, the voltage should match the battery being
charged. Press START/ENTER key for more than 3 seconds to start
charging.

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 the parameter value you set. Press BATT TYPE/STOP key toend the program.
ChargedBattery Elapsed Battery capacity
voltagetime
type
Chargecurrent

30

DISCHARGING OF THE PB BATTERY
Discharging of the Pb battery

- +
DEC

INC

Batt type
Stop

- +
DEC

Set up the discharge current on the left and nominal voltage on the right.
Range of discharge current is 0.1-5.0A, the voltage should match thebattery being charged. Press START/ENTER key for more than 3
seconds to start charging.

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 the parameter value you set. Press BATT TYPE/STOP key
to end the program.

Battery
Battery Elapsed
voltage Discharged
time
type
Discharge
capacity
current

31

STORAGE DATA PROGRAM
Storage data programFor your convenience, iMAX B6 Ultimate has a data storage and load program. It can store tenbatteries data representing the respective specifications of batteries. You can call back the datawhen charging or discharging without setting up the program again. Press START/ENTER key tomake it blink, and use INC or DEC to set up the parameter.

Start
Enter

Data CapacityType of
Voltage number
battery

Batt type Start ‘>3seconds’
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, the capacity is
3000m Ah.
Set up the charge current in the manual mode, or current limit in theauto mode. Press INC and DEC key simultaneously to make thecurrent field blink to switch the charge mode.

- +DEC INC

Set up the discharge current and final voltage.
- +- +DEC INC
DEC INC
DEC INC

32

LOAD DATA PROGRAM
DEC INC

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

DEC

INC

- +
DEC INCStart‘>3seconds’
Enter

Saving the data

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

Start
Enter

Choose the data number you want to call back. The data you
want to call back will be displayed.
Start‘>3seconds’Enter

Loading the data.

33

VARIOUS INFORMATION IN THE PROGRAM
Various information in the program
You can inquire various information on the LCD screen during the charging and discharging process.
Press DEC key, the charger will display users' setting. You can press INC key to monitor voltage ofeach cell while the battery’s balance lead is connected to the charger.
It comes to the final voltage when the program ended.
Displayed capacity cut-off function is turn on and the setting
value of capacity.
Displayed safety timer is turn on and duration of time inminutes.
Displayed temperature cut-off function is turn on.

The external temperature is displayed when the temperatureprobe is used.
Present input voltage.
The battery is connected with balance lead, you can check voltageof each cell in the battery pack.
C5:4.18 C6:4.15V
C7:0.00 C8:0.00V

34

WARNING AND ERROR MESSAGE
IMAX B6 Ultimate 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 causeof error that is self-explanatory with audible sound.
Incorrect polarity connected.

Battery connection is interrupted.

Short-circuit of the output termination.
Input voltage wrong.
The voltage of the battery pack has been selected incorrectly!

The charger has malfunctioned for some reason. Seek professional advice.
The voltage is lower than which is set. Please check the number of cells in the battery pack.

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.
Voltage of one cell in the battery pack is too high; please check the voltage of each cell.
Wrong connection of the connector detected; please check the connector and cable.

The internal temperature of the unit goes too high. Cool down the unit.
The processor cannot control the feeding current, please repair it.

35

RECOMMENDED ACCESSORIES

20A DCPower Supply

Temperature
Sensor Cable

EH Adaptor

XH Adaptor

HP/PQ Adaptor

TP/FP Adaptor

Dean charging cable

Tamiya charging
cable

TRAXXAS charging
cable

JST/BEC charging
cable

Crocodile clip
charging cable

Futaba RX
charging cable

Glow charging cable

Bullet charging cable EC3 charging cable36

CONFORMITY DECLARATIONIMAX B6 Ultimate 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:

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.

37

MAXIMUM CIRCUIT POWER CHART
Maximum circuit power chart
The actual amount of charge current feeding to the battery is automatically be limited to 200 Watts,
so not to exceed the charger's maximum rated charging power.
The maximum discharge power is approximately 25 Watts. The discharge current delivered to thecharger is limited 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, please decrease discharge current.
Please refer following chart for maximum charging/discharging current.
Battery
Type

38

MAXIMUM CIRCUIT POWER CHART
BatteryType

39

SPECIFICATION
Operating voltage range
Circuit power

DC 11.0~18.0 Volt
Max. Charge power 200Watts
Max. Discharge power 25Watts

Charge current range
Discharge current range
Current drain for balancing Li-Po/Ion/Fe
Li-ion/Fe/Polymer cell count
NiCd/NiMH battery cell countPb battery voltage
Net weight
Dimension

0.1~10.0A
0.1~5.0A
200mA/cell
1~6cells
1~18cells
2V~24V607g
150x116.5x53mm

Liability exclusion
This charger is designed and approved exclusively for use with the types of battery stated in these
Instruction Manual. SkyRC accepts no liability of any kind if the charger is used for any purpose otherthan that stated.
We are unable to ensure that you follow the instructions supplied with the charger, and we have nocontrol 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 incompetentor incorrect use and operation of our products, or which are connected with such operation in any way.
Unless otherwise prescribed 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 in which the damage occurred.

40

COMMONLY USED TERMS
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 thispoint. From this point on 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
chemical composition of the batteries determines the level of this voltage. Below this voltage thebattery enters the deep discharge zone. Individual cells within the pack may become reverse
polarised in this condition, and this can cause permanent damage.
A, mA: unit of measurement relating to charge or dis-charge 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 apack is charged for one hour at a current of 2 A, it has been fed 2 Ah of energy. It receives thesame quantity of charge (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
and discharge currents based on the battery 'C' rating. A battery's '1C' current is the same number
as the battery'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 3200mAh battery would be 3200mA (3.2A).

41

WARRANTY AND SERVICE
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 anominal 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 anominal 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 anominal 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 anominal 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
from the time of purchase. The warranty only applies to material or operational defects, which arepresent at t he time 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
to observe the procedures outlined in this manual.

42

All specifications and figures are subject to change without notice.
Printed in China
2010