B8
LITHIUM BATTERYBALANCE CHARGER/DISCHARGER
All specifications and figures are subject to change without notice.
Printed in China 2009www.skyrc.cn

TABLE OF CONTENTS

General information..................................................................................02
Exterior of the unit.....................................................................................06
Warning and safety notes...........................................................................07
Program flow chat....................................................................................10
Initial parameter set up (Users set up) .........................................................11
Lithium battery (Lilo/LiPo/LiFe) program .....................................................14
Charging of lithium battery.........................................................................14
Balance charging of lithium battery.............................................................15"FAST" charging lithium battery..................................................................16"STORAGE" control of lithium battery.........................................................17
Discharging of lithium battery....................................................................18
Voltage balancing and monitoring during the discharge...............................19
NiMH/NiCd battery program......................................................................20
Discharging NiCd/NiMH battery.................................................................21
Charge-to-discharge & discharge-to-charge cycle of NiMH/NiCd battery......22
Pb(Lead-sulphuric acid) battery program ...................................................23
Discharging Pb battery.............................................................................24
Save data program...................................................................................24
Load data program...................................................................................26
Various information during the process.....................................................27
Warning and error message......................................................................28
Recommended accessories......................................................................30
Conformity declaration..............................................................................31
Specifications ...........................................................................................32
Warranty and services...............................................................................32

01

General information

General information

Thank you for purchasing iMAX B8+ charger. You have purchased high quality
product made by SKYRC. Reliable SMD technology, outstanding performanceand flexibility, high level of safety features and last but not least their easy
handling and the new technological features you will have a lot of fun with it.
Optimized user interface
When charging or discharging, B8+ has an "AUTO" function that sets the feeding
current automatically. Especially for Lithium batteries, it can prevent the overcharging that can lead to an explosion by user's fault. Every program in the unit
is controlled with mutual links and communication for every possible error for
maximum safety. These can be set at user's option.

Maximum Circuit Power Chart
The actual amount of charge current feeding to the battery is automatically be limited
to 150 Watts, so not to exceed the charger's maximum rated charging power.
The maximum discharge power is approximately 20 Watts. The discharge current
delivered to the charger is limited by charger's internal thermal sensor for maxi
mum 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 discharge current.
Please refer following chart for maximum charging/discharging current.

Maximum Circuit Power Chart
It provides most convenient balance charge port for Lithium batteries, the universal
connector, pitch 2.54mm,compatible for Align XH, Kokam/Graupner/Robbe
Packs from 2 cells to 8 cells.

20W

Maximum Safety
Delta-Peak Sensitivity: The automatic charge termination program works on theprinciple of the Delta-peak voltage detection.
Auto-charge current limit: When charging NiCd or NiMH at "AUTO" current mode,
you can set the upper limit of charge current to avoid from high current charging.
This is very useful when charging the low impedance and small capacity
NiMH battery in "AUTO" mode.
Capacity Limit: The charging capacity always calculated by multiple of thecharging current and time. If the charging capacity exceeds the limit theprocess will be terminated automatically when you set the maximum value.
Temperature Limit: The temperature of the battery on charging will rise by its
internal chemical reaction. If you set the limit of temperature the process will be
expired forcibly when the limit has reached.
Processing Time Limit: You can also restrain the maximum process time to prevent from any possible defect.
Input Power Monitor: To protect the car battery using as input power from being
damaged the voltage of it always monitored. If it drops below the lower limit theprocess will be ended automatically.
High-power and high-performance circuit
B8+ employs the circuit that has maximum output power of 150W. As a result it
can charge or discharge up to 27 cells of NiCd/NiMH and 8 series of Lithium
batteries with maximum current of 7.0A. Furthermore the cooling system is so
efficient that can hold such a power without any trouble of running the CPU or theoperating program.

02

03

General information

General information

20W

Individual voltage balance for Lithium batteries inside
B8+ has an individual-cell-voltage balancer inside. This does not require any
extra balancer when charging Lithium batteries (Lilo/LiPo/LiFe) for cell voltage
balancing.
Balance individual cells on discharge
B8+ also can monitor and balance individual cells of the Lithium battery pack during
the discharge process. If the voltage of nay one cell varies abnormally, the pro
cess will be stopped with the error message.
Suitable for various types of Lithium batteries
B8+ can accept three types of Lithium batteries-Lilo, LiPo and LiFe. They havedifferent characteristics by their chemistry. You can select any one of them that you
are going to process before the job. For their specifications, refer "Warnings andsafety notes" section.
Lithium battery "Fast" and "Storage" mode
You can charge Lithium battery for special purposes. "Fast" charge reduces
the charging time of Lithium battery and "Storage" mode controls the final voltage of the battery to be suit for long time storage.
Data Store/LoadFor 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 dis
charge continually. These data can be called out at any time you need and the pro
cess can be executed without program setting.
Cyclic charging/discharging
Perform 1 to 5 cycles of charge? discharge or discharge? charge continually forbattery refreshing and balancing.
PC based analysis using USB communication
For technical expert, B8+ offers PC based program can analysis the characteristicof the battery by USB port. It shows a graph of voltage, current, capacity andtemperature curves. It also shows the individual voltage of each cell in the
Lithium battery pack.
(*PC analysis software and USB Link wire are not included)

04

05

Exterior of the unit

Warning and safety notes

Warning and safety notes

Exterior of the unit
LCD screen(16chr.x2lines)

Never leave the charger unsupervised when it is connected to its power supply. If any
malfunction is observed immediately terminate the process and refer to the operation
manual.

Charging
Lead
Connector(4mm banana female)

Keep the unit away from dust, damp, rain, heat, direct sunshine and vibration. Do notdrop it.
The circuit of the unit is designed to be powered by a 11-18 DC only.
This unit and the battery to charge or discharge should be set up on a heat-resistant,non inflammable and non-conductive surface. Never place them on a car seat, carpet or
similar. Keep all the inflammable volatile materials well away from operating area.

Universal
Connector
Pitch 2.45mm

Cooling vent of charger can not be covered or closed in order to keep good ventilation.

Batt type/stop
To select
main program
To stopthe operation

Dec/inc
To selest
sub program
To alterthe value

Start/enter
To resumeor start
the operation

Make sure to completely understand the feature of batteries to be charged ordischarged. If the program is set up incorrectly, the battery may be severely damaged.
Especially for Lithium battery, it may cause fire or explode if charged incorrectly orovercharged.

Input Power
Cable(DC11~18V)
Temperature
Sensor port

USB Port

Voltage level: 1.2V/cell
Allowable fast charge current: 1C~2C depends on theperformance of cell Discharge voltage cut off level: 0.85V/cell(NiCd), 1.0V/cell(NiMH)
Voltage level: 3.6V/cell
Max charge voltage: 4.1V/cell

Lithium polymer balance charge program connection diagram

Allowable fast charge current: 1C or lessThis diagram shows the correct way to connect your battery to the B8+ charger whilecharging in the balance charge program mode only.

Min. discharge voltage cut off level: 2.5V/cell or higher

WARNING:
Failure to connect as shown in this diagram will damage this charger.

Voltage level: 3.7V/cell
Max charge voltage: 4.2V/cell
Allowable fast charge current: 1C or less
Discharge voltage cut off level: 3.0V/cell or higher
Voltage level: 3.3V/cell
Max charge voltage: 3.6V/cell
Allowable fast charge current: 4C or less(e.g. A123M1)
Discharge voltage cut off level: 2.0V/cell or higher
Voltage level: 2.0V/cell
Max charge voltage: 2.46V/cell
Allowable fast charge current: 0.4C or less
Discharge voltage cut off level: 1.75V/cell or higher

The main battery leads must be connected along with the balance lead connector as
shown before charging your battery .

06

07

Warning and safety notes

Warning and safety notes

Warning and safety notes
To avoid short-circuits between the charge lead, always connect the charge cable to theunit first and only then to the batter to be charged or discharged. Reverse the sequencewhen disconnecting.

Very Important!
Do not connect more than one battery pack to the charge lead at any one time.

The charger is not suitable for the following battery types
Battery pack, which consists of different types of cell (including different manufactures)
Battery which is already fully charged or just slightly discharged
Non-rechargeable batteries (Explosion hazard).
Batteries that require a different charge technique from NiCd, NiMH, Lilo, LiPo, LiFe or
Pb.

Lead. They are red, positive (+) and black, negative (-). Since the charger cannot detectthe difference between the internal resistances of the battery pack, cable resistance andconnector transfer resistance, the first requirement if the charger to work properly is thatthe charge lead should be of adequate conductor cross-section. And also high-quality
connectors (normally gold-contact type) must be fitted to both ends. Refer to theinformation provided by the battery manufacture regarding charging methods, and verify
the recommended charge current and charge time. Especially for Lithium batteries, youhave to follow the charge instruction provided by the manufacturer strictly.
Do not attempt to disassemble the battery pack arbitrarily.
You have to pay attention to verify the capacity and the voltage of the Lithium battery
pack. It may be composed of parallel and series connection mixed. In parallel link thecapacity of the battery pack is multiplied by the number of cells but the voltage remains
the same. That kind of voltage imbalance causes a fire or explosion during charge
process. We recommend you compose the Lithium batter pack in series only.

Discharge

Faulty or damaged battery.
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 manufacture to be suitable for the currents the charger delivers during the charge process.

Please bear in mind of checking the following point before
charge operation:
Did you select the appropriate program, which are suitable for the type of battery?
Did you set up adequate current for charging or discharging?
Lithium battery pack can be composed with parallel and series circuits mixed. You haveto check the composition of the battery pack carefully before charging
Are all connections firm and safe, or is there an intermittent contact at any point in thecircuit?

The typical purpose of discharge is to determine the residual capacity of the battery, or tolower the voltage of battery to a defined level. When you discharge the battery you also
have to pay attention on the process same as charging. To avoid the battery becoming
deep-charged, set the final discharge voltage correctly. Lithium batteries should not be
deep-charged to lower than the minimum voltage, as this leads to a rapid loss of capacity
or a total failure. Generally, you do not need to discharge Lithium battery voluntarily.
Some rechargeable batteries are said to have a memory effect. If they are partly used andrecharged before the whole charge is drawn out, they "remember" this and next time will
only use that part of their capacity. This is a 'memory effect' NiCd and NiMH batteries are
said to suffer from memory effect. They prefer complete cycles; fully charge then use until
empty, do not recharge before storage-allow them to self-discharge during storage. NiMH
batteries have less memory effect than NiCd. The Lithium battery prefers a partial rather
than a full discharge. Frequent full discharges should be avoided if possible. Instead,charge the battery more often or use a larger battery.
The brand-new NiCd battery pack is partially useful with its capacity until it has been
subjected to 10 or more charge cycles in any case. The cyclic process of charge anddischarge will lead to optimize the capacity of battery pack.

Charging
A specific quantity of electrical energy is fed into the battery during charge process.
The charge quantity is calculated by multiplying charge current by charge time. The
maximum permissible charge current varies according to the battery types or its
performance, and can be found in the information provided by the battery manufacture.
It is only allowed to charge batteries at rates higher then the standard charge current if
they are expressly stated to be capable of quick-charge.
Connect the battery to charge to output terminal of the charger using suitable charge

Those warning and safely notes are particularly important.
Please follow the instructions for a maximum safely; otherwise
the charger and the battery can be damaged violently. And also
it can cause a fire to injure a human body or to lose the property.

08

09

Program flow chat

Initial parameter set up (Users set up)

Initial parameter set up (Users set up)
B8+ will be operated with the default value of the essential user settings when it isconnected 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 eachscreen.
When you are willing to alter the parameter value in the program, press start/enter
key to make it blink then change the value with Inc> or <Dec key. The value will be
stored by pressing start/enter key once.

This informs you of its designation.

INC

DEC INC

The screen displays the nominal voltage of lithium
battery. There are three kinds 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 explode during charge process.

DEC INC

DEC INC10

B8+ recognize the cell count of lithium battery
automatically at the beginning of charge ordischarge process to avoid from erroneous settingby user. But deeply discharged battery can beperceived incorrectly. To prevent the error, you can
set the time term to verify the cell count by theprocessor. Normally, 10 minutes are enough toperceive the cell count correctly. For the battery oflarger capacity, you may extend the time term. But if
you set the time term to long for the battery ofsmaller capacity, the charge or discharge process
can be finished within the time term with theerroneous cell count. This may cause the fatal result.
If the processor recognizes the cell count incorrectlyat the beginning of charge or discharge process, you
may extend the time. Otherwise, you had better use
with the default value.

11

Initial parameter set up (Users set up)

DEC INC

DEC INC

Initial parameter set up (Users set up)

This shows the trigger voltage for automatic charge
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
the battery; if it is set lower, there is a possibility ofpremature termination. Please refer the technicalspecification of the battery. (NiCd default: 12mV,
NiMH default: 7mV)

DEC INC

DEC INC
DEC INC

DEC INC

DEC INC
DEC INC
DEC INC

DEC INC
DEC INC

DEC INC

DEC INC

DEC INC

DEC INC

DEC INC

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 anddischarge can often become warm after charge ordischarge period. The program can insert a timedelay to occur after each charge and discharge pro
cess to allow the battery adequate time to cool down
before being subjected to the next process. The
value ranges from 1 to 60 minutes.

DEC INC
DEC INC
DEC INC

You can set the trickle charge mode on or off. If it ison, the charger will automatically supply the trickle
charge current to achieve the full charge without
overheating the battery after fast charge has been
terminated.
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 circuitcannot detect the battery full. The value for the safety
timer should be generous enough to allow a full chargeof the battery.
This program sets the maximum charge capacitythat will be supplied to the battery during charge.
If the delta-peak voltage is not detected nor thesafety timer expired by any reason, this feature
will automatically stop the process at the
selected capacity value.
The beep sounds at every time pressing the but
tons to confirm your action. The beep or melody
sounded at various times during operation toalert different 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 theoperation forcibly terminated to protect the input
battery.

DEC INC
DEC INC
You can adjust the brightness of LCD screen at

the charger.

DEC INC

12

13

Initial parameter set up (Users set up)

Balance charging lithium battery

Lithium battery (LiIo/LiPo/LiFe) program

Balance charging of lithium battery

These programs are only suitable for charging and discharging Lithium batteries with anominal voltage of 3.3V, 3.6V and 3.7V per cell. These batteries need to adopt different
charge technique that is termed a constant voltage (CV) and constant current (CC)method. The charge current varies according to the battery capacity and performance.

This function is for balancing the voltage of Lithium-polymer battery cells while charging.
In the balance mode, the battery needs to have a balance lead to connect to the individual
balance port at the right side 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.

The final voltage of charge process is also very important; it should be precisely
matched with the charade 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 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 then change the value with Inc> or <Dec key. The value will be stored bypressing start/enter key once.

LiPo
2.0A

BALANCE
11.1V(3S)

DEC INC

DEC INC

Batt type Start
stop Enter`>3seconds`

Charging of lithium battery
This charging mode is for charging Li-Po/Ion/Fe battery without balance lead.

DEC INC

DEC INC

Batt type Start
stop Enter`>3seconds`

Start
Enter

The left side of the first line shows the type of battery
you select at the users setting. The value on the left
side of second line sets a charge current and thevalue on the right side of second line sets the voltageof the battery pack.
After setting the current and voltage press
Start/Enter key for more than 3 seconds to start theprocess. (Charge current: 0.1~0.7A, Voltage: 1~8
series)This shows the number of cells you set up and theprocessor detects. "R" shows the number of cells
found by the charger and "S" is the number of cells
selected by you at the previous screen. If both
numbers are identical you can start charging bypressing Start/Enter button. If not press Batt
type/Stop button to go back to previous screen.
Then carefully check the number of cells of thebattery pack to charge again.

Start
Enter

The left side of the first line shows the type of battery
you select at the users setting. The value on the left
side of second line sets a charge current and thevalue on the right side of second line sets the voltageof the battery pack.
After setting the current and voltage press
Start/Enter key for more than 3 seconds to start theprocess. (Charge current: 0.1~0.7A, Voltage: 1~8
series)This shows the number of cells you set up and theprocessor detects. "R" shows the number of cells
found by the charger and "S" is the number of cells
selected by you at the previous screen. If both
numbers are identical you can start charging bypressing Start/Enter button. If not press Batt
type/Stop button to go back to previous screen.
Then carefully check the number of cells of thebattery pack to charge again.
The screen shows the present situation during
charge process. To stop charging press Batt
type/Stop key once.

numberofcells

charging
batterytime
voltagechargechargedcurrent
capacity

The screen shows the present situation during
charge process. To stop charging press Batt
type/Stop key once.

numberofcells

charging
batterytime
voltagechargechargedcurrent
capacity

14

15

‘FAST’ charging lithium battery‘STORAGE’ control of lithium battery"FAST" charging lithium battery"STORAGE" control lithium battery

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. The charging 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.

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 thetype of the batter, 3.75V for Lilo, 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 todischarge.

DEC INC

DEC INC

You can set up the charging current and thevoltage of the battery pack being charged. As youpress Start/Enter button the voltage confirmation
will be displayed. And then, if you confirm thevoltage and current, press Start/Enter button
again to start charging.

You can set up the current and the voltage of thebattery pack to be charged. The current will be
used for charge or discharge the battery to reachthe "STORAGE" level of voltage.

DEC INC

DEC INC

Batt type Start
stop Enter`>3seconds`

Batt type Start
stop Enter`>3seconds`
This shows the present state of "FAST"charging.
To stop charging arbitrary, press Batt type/Stop
key once.
elapsedsuppliednumber time
capacity
chargeCurrent
ofcurrent voltage ofcells
battery16

The screen shows the present situation during
charge process. To stop charging press Batt
type/Stop key once.
elapsedsuppliednumber time
capacity
chargeCurrentoforvoltage of
cells
discharge battery
current

17

Discharging of lithium battery

Voltage balancing and monitoring during the discharge

Discharging of lithium battery

DEC INC

DEC INC

Batt type Start
stop Enter`>3seconds`

Voltage balancing and monitoring during the discharge

The value of discharge current on the left side ofscreen may not exceed 1C for a maximum safety
and the final voltage on the right should not be
under the voltage level that is recommended by
the battery manufacture to avoid deep
discharging.
To start to discharge press Start/Enter key formore than 3 seconds.
(Discharge current:0.1~5.0A)

The processor monitors the voltage of individual cells during 'storage-mode' and'discharge' of Lithium battery pack. It tries to normalize the voltage to be equal. For
this feature, the individual plug of the battery pack should be connected to theindividual port of the charger.
If the voltage of an one or more cells varies abnormally during the procedure, B8+
terminates the process forcibly with the error messages. If this happens, the battery
pack contains the bad cell, or the bad connection of the cable or plug. You can easily
know which one cell is bad by pressing Inc> button at time of showing the error
messages.

The processor found that the voltage of one of the cellin the Lithium battery pack is too low.
This shows the present state of discharge. To
stop discharging press Batt type/Stop key once.

elapsedtimedischarge
current

INC
In this case, the 4th cell is bad. If there happen theconnection-break of the cable or plug, the voltage
value may show zero.

battery
voltageINC

discharged
capacity

18

19

Discharging NiCd/NiMH battery

NiMH/NiCd battery program

NiMH/NiCd battery program

Discharging NiCd/NiMH battery
Set discharge current on the left and final voltage on
the right. The discharge current ranges from 0.1 to
5.0A and the final voltage ranges from 0.1 to 30.0V.
to start the process, press Start/Enter key for morethan 3 seconds.

These programs are for charging or discharging NiMH(Nickel-Metal-Hydride) or
NiCd(Nickel-Cadmium) battery commonly used for R/C model applications. To alter thevalue at the display, press Start/Enter key to make it blink then change the value using
Inc> or <Dec key. The value will be stored by pressing Start/Enter key once.

DEC INC

DEC INC

To start the process, press Start/Enter button for more than 3 seconds.
Batt type Start
stop Enter`>3seconds`

Charging NiCd/NiMH battery

DEC INC

Batt type Start
stop Enter`>3seconds`

This program simply charges the battery using
the current you set. In Aut mode,You need to
set the upper limit of charge current to avoid fromhigher feeding current that may damage the battery. Because some batteries of low impedanceand small capacity can lead to the higher charge
current by the processor at automatic charge
mode. But in Man mode, it will charge the battery with the charge current you set at the display.
Each mode can be switched by pressing Inc> and<Dec button simultaneously when the current
field is blinking.

batterytype

elapsedbatterytime
voltagechargedischarged
current capacity

The screen displays the current state of discharge.
You can alter the discharge current by pressing
Start/Enter key during the process. Once youchange the current value, store it by pressing
Start/Enter button again. To stop discharging press
Batt type/Stop key once. The audible soundindicates you at the end of process.

The screen displays the current state of charging.
To stop the process, press Batt type/Stop key
once. The audible sound indicated you the end ofprocess.
batterytype

elapsedbatterytime
voltagechargedischarged
current capacity

20

21Charge-to-discharge & discharge-to-charge cycle of NiMH/NiCd battery

Charge-to-discharge & discharge-tocharge cycle of NiMH/NiCd battery

DEC INC

DEC INC

Batt type Start
stop Enter`>3seconds`

batterytype

elapsedbatterytime
voltagedischarge discharge
or charge or charge
current
capacity

Set the sequence on the left and the number ofcycle on the right. You can use this function forbalancing, refreshing and break-in the battery. To
avoid rising temperature of the battery, there will bea brief cool-off period that already fixed at User
setting after each charge and discharge process.
The cycling number ranges from 1 to 5.

To stop the process, press Batt type/Stop key
once.
You can change the discharge or charge current bypressing Start/Enter key once during the process.
The audible sound indicates you the end of process.

At the end of the process, you can see charged ordischarged electric capacities of the battery ateach cyclic process. By pressing Inc> or <Decbutton, the screen shows the result of each cycle inorder.

Pb(Lead-sulphuric acid) battery program

Pb(Lead-sulphuric acid) battery programThis is programmed for charging Pb(lead-acid) battery with nominal voltage from 2 to36V. Pb batteries are totally different from NiCd or NiMH batteries. They can only
deliver relatively lower current compare to their capacity, and similar restrictions
definitely apply to charge. So the optimal charge current will be 1/10 of the capacity. Pbbatteries must not be charged rapidly. Always follow the instruction is supplied by the
manufacture of battery.

When you are willing to alter the parameter value in the program, press Start/Enter key
to make it blink then change the value with Inc> or <Dec key. The value will be stored bypressing Start/Enter key once.

Charging Pb battery

DEC INC

DEC INC

Set up the charge current on the left and thenominal voltage of the battery on the right. The
charge current ranges from 0.1 to 7.0A and thevoltage should be matched with the battery being
charged.
Start the charge process by pressing Start/Enter
key for more than 3 seconds.

Batt type Start
stop Enter`>3seconds`

The screen displays the state of charging process.
To stop charging forcibly, press Batt type/Stop key
once. The audible sound indicates you at the endof process.
elapsedbatterytime
voltagechargechargecurrent
capacity

22

23

Discharging Pb battery

Save data program

Discharging Pb battery
Set discharge current on the left and final voltage
on the right. The discharge current ranges from
0.1 to 5.0A. To start the process, press
Start/Enter key for more than 3 seconds.

DEC INC

Start
Enter

DEC INC

Batt type Start
stop Enter`>3seconds`

battery
type

35-36
33-34
31-32
29-30
27-28
25-26
23-24
21-22
19-20
17-18
15-16
13-14

The parameter value setting up in this screen does
not affect charge or discharge process. They only
represent the specification of the battery. The
following screens will automatically be displayed
exactly matched with the battery type you set up.
The example shows the battery pack of NiMH, 12
cells and 3000mAh of capacity.

elapsedbatterytime
voltagedischarge discharge
current
capacity

voltage

The screen displays the current state ofdischarge. You can alter the discharge current bypressing Start/Enter key during the process.
Once you change the current value, store it bypressing Start/Enter button again.
To stop discharging press Batt type/Stop key
once. The audible sound indicates you at the endof process.

Type ofdate
number capacity battery

Batt type Start
stop Enter`>3seconds` Set up the charge current for manual charge mode,or the current limit for automatic charge mode. Eachmode can be switched by pressing Inc> and <Decbutton at the same time when the current field isblinking.

DEC

INC

DEC INC
Setting up discharge current and final voltage

Save data program
B8+ has a data storage and load program for your convenience. This feature can store
up to 10 battery data by number that represent the individual specification of batteries
you are using. They can be called back for the process of charging or discharging
without setting up the program again. To set up the parameter value in the program,press Start/Enter key to make it blink then change the value with Inc> or <Dec key.

DEC INCDEC

DEC INC
INC
Setting up the sequence of charge and discharge,
and the cycling number

DEC INC

DEC INCStart`>3seconds`
Enter
Saving the data

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25

Load data program

Various information during the process

Load data program

The final voltage will be reached at the end ofprocess.

This program calls back the data that was stored at "Save Data" program.
To load the data, press Start/Enter key once to blink the data number field and selectthe number using Inc> or <Dec key then press Start/Enter key for more than 3 seconds.

DEC

Select the data number to be called back.
The data matched with the number will be displayed
at this time.

DEC

Start
Enter

DEC

Start
`>3seconds`
Enter

The internal temperature of the charger and thetemperature of battery being charged.
(The external temperature only will be displayedwhen using the thermal probe.)

DEC
Loading the data.

DEC
The present voltage of input DC power.

Various information during the process
You can inquire various information on LCD display during charging or discharging
process. When you press<Dec button the charger shows the establishment of user
settings. And also you can monitor the voltage of individual cell by pressing Inc> button
when the individual connection cable is linked to the Lithium battery being processed.

INC

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Using the individual connection cable to thebattery, you can check the individual voltages ofeach cell in the battery pack. When connect thecable to the port on the right side of the charger
the program shows them for maximum 8 cells insequence. To utilize this feature, the battery packmust have output connector that linked to eachcells.

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Warning and error messages

Warning and error messages

Warning and error messages

The processor detects the voltage is lower

B8+ 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

than you set at Lithium program. Please checkthe cell count of the battery pack.

displays the cause of error that is self explanatory with audible sound.

The output is connected to a battery withincorrect polarity

The processor detects the voltage is higher
than you set at Lithium program. Please checkthe cell count of the battery pack.

This will be displayed in case of detecting aninterruption of the connection between battery
and output or voluntarily disconnecting thecharge lead during the operation of charge ordischarge on output.

The voltage of one of the cell in the Lithium
battery pack is too low. Please check thevoltage of the cell one by one.

The voltage of one of the cell in the Lithium
A short-circuit at output. Please check the
charging leads.

The voltage of input power drops below the limit.

battery pack is too high. Please check thevoltage of the cell one by one.

There is bad connection at the individual
connector. Please check the connector andcables carefully.

The voltage of Lithium battery pack was
selected incorrectly. Verify the voltage ofbattery back carefully.

The internal temperature of the unit goes toohigh. Cool down the unit.

The processor can not continue to control the
There happens the malfunction at the charger
circuit by any reason.

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feeding current by any reason. The unit needs
to be repaired.

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Conformity declaration

Recommended accessories

IMAX B8+ 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 DCPower Supply

Software Kit

Temperature
Sensor Cable

EH Adaptor

XH Adaptor

HP/PQ Adaptor

TP/FP Adaptor

Dean charging cable

Tamiya charging cable

TRAXXAS charging cable

Glow charging cable

Bullet charging cable

EC3 charging cable

Crocodile clip
charging cable

Futaba RX
charging cable

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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.

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Specifications

Specifications
Operating voltage range: 10.0~18.0Volt
Circuit power: max. 150 Watts
Charge current range: 0.1~7.0A
Discharge current range: 0.1~5.0A
Discharge circuit power: max 20 Watts
Current drain for balancing Li-Po: 300mA/cell
NiCd/NiMH battery cell count: 1~27 cells
Lithium battery cell count: 1~8 Series
Pb battery voltage: 2 to 36V
Weight: 480g(Net Weight)
Dimensions: 163.8X106.2X45.6mm

Warranty and services
We warrant this product for a period of one year(12 months) from the date ofpurchase. The guarantee applies only to such material or operational defects,
which are present at the time of purchasing the product. During that period, we
will repair or replace without service charge any product deemed defective dueto those causes.
You will be required to present proof of purchase (invoice or receipt). This
warranty does not cover the damage due to wear, overloading, incompetenthandling or using of incorrect accessories.

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