ImaxRC b8 pro User manual

Prin t ed in Ch i n a ©2009
A ll spe ci f ic at i on s an d f i gu res are su bj ec t t o ch an ge w it h ou t n ot i ce.
Thank you for purchasing ImaxRC B8 PRO charger. This is h i g h -s p e e d
r e c h a rg e / d i s c h a rg e e q u i p m e n t manufactured with high technology &
professional control software. It enables you maintain your battery with optimal
status with high level of safety.
Instruction Manual
www.imaxrc.com

Optimized user interface
High-power and high-performance circuit
Individual voltage balance for Lithium batteries inside
Balance individual cells on discharge
Suitable for various types of Lithium batteries
Lithium battery "Fast" and "Storage" mode
Maximum Safety
When charging or discha rging,B8 ha s an "AUTO" functio ntha t se ts th e fe e din gcur-
re nt a utoma tically. Especia lly for Lithiumba tte ries, it ca nprevent the o ver-ch argin g
that can lea dtoa nexplosion by use r's fa ult.Eve ry pro gra min the unit iscontrolled
withmutua l linksa ndcommunica tionfor e very po ssible erro r for ma ximumsa fe ty.
The se ca n be se t a t use r' soption.
Specia l recharge plugs port f or re ceiver, t ransmit te r and ignit er charger. A nd f or
frequent ly used cha rger port such as multi purpose crocodile pin etc.
It provides most convenien t balance charge port f or L ithium batt eries, wit h sep arat ed
2, 3, 4, 5, 6, 7, 8 cha rge port, and e xternal reverse co nnector.
B8 PRO employs t he circuit that has maximum out put power of 150W. A s a result it can
charge or discharge up t o 27 cells of NiCd/ NiMH and 8 series of Lit hium bat teries wit h
maximum current of 7.0A. Furt hermore the cooling syst em is so effi cient that can hold
such a power wit hout any trouble of running t he CPU or t he operat ing program.
B8 PRO has an individual-cell-volt age balancer inside. This does not require any ext ra
balancer when charging Lit hium bat teries (Lilo/LiP o/LiFe) f or cell voltage balancing.
You can charge Lit hium bat tery f or special purposes. "Fast" charge reduces t he
charging t ime of Lit hium bat tery a nd "St orag" mode cont rols the fi nal voltage of t he
batt ery t o be suit f or long t ime st orage.
Delt a-Peak S ensit ivit y: The automat ic charge t ermination program works on the
principle of t he Delta-peak volt age det ect ion.
Aut o-charge current limit : When charging NiCd or NiMH at "AUTO" current mode,
you can set t he upper limit of charge current t o avoid from high current charging. This is
very usef ul when charging t he low impedance and small capacit y NiMH batt ery in
"AUTO" mode.
Capacity Limit: The charging capacity always calculat ed by mult iple of t he charg ing
current and t ime. I f t he charging capacit y exceeds the limit t he process will be
terminated aut omat ically when you set t he maximum value.
Temperature Limit: The t empera ture of t he bat tery on charging will rise by it s internal
chemical react i on. I f you set t he limit of t emperature t he process will be expired f orcibly
when the limit has reached.
Processing Time Limit: You can also restrain t he maximum process time t o prevent
f rom any p ossib le de f ect .
Input Power Monit or: To prot ect t he car bat tery using as input power f rom being
damaged the volt age of it always monit ored. I f it drops below t he lower limit t he process
will be ended aut omatically.
For users conMMnience it can store maximum 10 dat a of diff erent bat teries. Y ou can
est ablish t he data cont ains program sett ing of t he batt ery t o charge or discharge
continually. These dat a can be called out at any t ime you need and t he process can be
execu ted wit ho ut p ro gram set t in g.
Perf orm 1 t o 5 cycles of charge?discharge or discharge?charge cont inually f or bat tery
ref reshing and balancing.
Data Store/Load
Cyclic charging/discharging
PC based analysis using USB communication
*PC analysis software and USB Link wire are not included
Multi-use wires
01 02
B8 PRO 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 process will
be stopped with the error message.
B8 PRO can accept three types of Lithium batteries-Lilo, LiPo and LiFe. They have
different 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 and safety
notes" section.
For technical expert, B8 PRO offers PC based program can analysis the characteristic of the
battery by USB port. It shows a graph of voltage, current, capacity and temperature curves.
It also shows the individual voltage of each cell in the Lithium battery pack.
Five kinds of wires are provided with the B8 PRO charger.You can charge and discharge
your battery easily with these wires.
Features Features
Features

Never leave t he charger unsupervised when it is connect ed t o it s power supply. I f any
malf unct ion is observed immediat ely t erminat e the process and ref er to t he operat ion
manual.
Keep the unit away f rom dust , damp, rain, heat, direct sunshine and vibration. Do not
drop it .
The circuit of t he unit is designed to be powered by a 11-18 DC only.
This unit and t he bat tery to charge or discharge should be set up on a heat -resist ant ,
non infl ammable and non-conductive surf ace. Never place t hem on a car se at, carpet or
similar. K eep all t he infl ammable volatile mat erials well away from operat ing area.
Cooling vent of charger can not be covered or closed in order t o keep good vent ilation.
Make sure to complet ely underst and t he f eat ure of bat teries t o be charged or
discharged. I f the program is set up incorrectly, the bat tery may be severely damaged.
Especially for Lit hium bat tery, it may cause fi re or explode if charged incorrect ly or
overcharged.
Volt age level: 1.2V/ cell
Volt age level: 3. 6V/ cell
Max charge volt age: 4. 1V/ cell
Allowable f ast charge current : 1Cor less
Min. discharge voltage cut off level: 2.5V/cell or higher
Volt age level: 3. 7V/ cell
Max charge volt age: 4. 2V/ cell
Allowable f ast charge current : 1Cor less
Discharge volt age cut off level: 3. 0V/ cell or high er
Allowable f ast charg e current: 1C~2 C dep end s o n t he
pe rf ormance of cellDischarg e volt ag e cut o ff le vel:
0. 85V/cell(NiCd), 1. 0V/cell(NiMH)
Volt age level: 3.3V/ cell
Max charge volt age: 3. 6V/ cell
Allowable fast charge current: 4C or less(e.g. A123M1)
Discharge volt age cut off level: 2. 0V/ cell o r highe r
Volt age level: 2.0V/ cell
Max charge volt age: 2.46V/ cell
Allowable f ast charg e current: 0. 4C o r less
Discharge volt age cut off level: 1. 75V /cell or highe r
WARNI NG:
Fai lure to connect wi ll damage thi s charger. The right approach is as follows:
03 04
WARNI NG:
If usi ng crocodi le cl ips as shown i n above di agram, make sure they are unable to
touch Together!
Charging lead connector
(4mm banana female) LCD screen(16chr.x2lines)
Input power
cable(DC11~18V)
USB port
Individual cell connector
port
Start/Enter
To resume or start the
operation
Dec/Inc
To select sub program
/To alter the value
Dec/Inc
To select sub program
/To alter the value
Temperature
sensor port
This diagram shows the correct way to connect your battery to the B8 PRO charger while
charging in the balance charge program mode only.
*The main battery leads must be connected along with the balance lead connector as shown before
charging your battery . Pb
LiFe
LiPo
Li-ion
NiCd/NiMH
Exterior of the unit Warning and Satety Notes
Exterior of the unit Warning and Satety Notes

To avoid short -circuits between t he charge lead, always connect t he charge cable t o
the unit fi rst and only then t o the batt er to be charged or discharged. Reverse t he
sequence when disconnect ing.
Batt ery pack, which consist s of diff erent t ypes of cell (including diff erent manuf act ures)
Batt ery which is already f ully charged or just slightly discharged
Non-rechargeable bat teries (Explosion hazard).
Batt eries that require a diff erent charge technique from NiCd, NiMH, Lilo, LiPo, LiFe or
Pb.
Fault y or damaged bat tery
Bat tery fi tt ed wit h an integral charge circuit or a prot ect ion circuit .
Bat teries inst alled in a device, or which are elect rically linked t o ot her component s.
Bat teries t hat are not expressly st at ed by t he manu facture to be suit able f or the
current s t he charger delivers during the charge process.
Very Important!
The charger is not suitable for the following battery types
Do not connect more tha n one battery pa ck to the cha rge lea d at any one time .
Please bear in mind of checking the following point before
charge operation:
Charging
Did you select t he appropriat e pro gram, which are suitable f or t he t ype of batt ery?
Did you set up adequa te current f or charging or discharging?
Lit hium batt ery pack can be composed wit h parallel and series circuit s mixed. Y ou have
to ch eck the composit ion of t he bat tery pack caref ully bef ore charging
Are all connect ions fi rm and safe, or is t here an int ermit tent contact at any point in t he
circuit ?
A specifi c quantit y of electrical energy is f ed int o the bat tery during charge process.
The charge qu antit y is calculat ed by mult iplying charge current by charge time. The
maximum permissible charge current varies according t o the bat tery t ypes or it s
perf ormance, and can be f ound in t he inf ormat ion provided by t he bat tery manuf acture.
It is only allowed t o charge bat teries at rat es higher t hen t he st andard charge current if
they are expressly st ated t o be capable of quick-charge.
Connect t he bat tery to charge to out put t erminal of t he charger using suit able charge
lead. They are red, posit ive (+) and black, negat ive (-). Since the charger cannot det ect
the diff erence bet ween t he int ernal resist ances of t he bat tery pack, cable resistance
and connect or t ransfer resistance, t he fi rst requirement if t he charger t o work properly
is t hat t he charge lead should be of adequate conduct or cross-sect ion. A nd also high-
qualit y connect ors (normally gold-contact t ype) must be fi tt ed t o both ends.
Refer to t he inf ormation provided by t he bat tery manuf act ure regard ing cha rging
met hods, and verif y t he recommended charge current and charge time. E specially for
Lit hium batt eries, you have to f ollow t he charge inst ruct ion provided by t he
manufacturer strictly.
Do not at tempt t o disassemble t he bat tery pack arbit rarily.
You have t o pay at tent ion to verif y t he capacit y and the volt age of t he Lit hium bat tery
pack. I t may b e composed of parallel and series connection mixed. I n parallel link t he
capacity of the batt ery pack is multiplied by t he number of cells but the volt age remains
the same. That kind of volt age imbalance causes a fi re or explosion during charge
proce ss. We recommend yo u compose t he L it hium bat ter pack in se rie s o nly.
The t ypical purpose of discharge is t o det ermine t he residual capacit y of t he bat tery, or
to lower the vo ltage of bat tery t o a defi ned level. When you discharge t he bat tery you
also have t o pay at tention on t he process same as charging. To avoid t he bat tery
becoming deep-charged, set t he fi nal discharge volt age correct ly. Lit hium b att eries
should not be deep-charged t o lower than t he minimum volt age, as t his leads t o a rapid
loss of capacit y or a tot al f ailure. Generally, you do not need to discharge Lithium
batt ery volunt arily.
Some re chargeable batt eries are said to have a memory effect . I f they are part ly used
and recharged bef ore t he whole charge is drawn out , they remember this and next
time will only use t hat part of t heir capacit y. This is a memory eff ect NiCd and NiMH
batt eries are said t o suff er f rom memory eff ect . They prefer complet e cycles; f ully
charge t hen use unt il empt y, do not recharge bef ore storag e-allow t hem to self -
discharge during st orage. NiMH bat teries have less memory eff ect t han NiCd.
The Lit hium bat tery prefers a part ial rather than a f ull discharge. Frequent f ull
discharges should be avoided if possible. I nst ead, ch arge t he bat tery more oft en or use
a larger bat tery.
The brand-new NiCd bat tery pack is partially useful wit h it s capacit y until it has been
subject ed t o 10 or more charge cyc les in any case. The cyclic proce ss of charge and
discharge will lead t o opt imize t he capacity of batt ery pack.
Discharge
“ ”
‘ ’
05 06
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.
Warning and Satety Notes Warning and Satety Notes
Warning and Satety Notes

PROGRAM SELECT
LOAD DATE
Start
Enter
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC DEC
Batt type stop
Start
Enter
INC
DEC
INC
DEC
INC
DEC
Start
Enter
Start
Enter
Start
Enter
Start
Enter
Batt type stop
Batt type stop
Batt type stop
Batt type stop
Batt type stop
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
07 08
PROGRAM SELECT
Lithium battery LIXX CHARGE LIXX CHARGE LIXX BALANCE LIXX FAST CHG LIXX STORAGE
LIXX DISCHARGE
PROGRAM SELECT
NiMH battery
PROGRAM SELECT
NiCD battery
PROGRAM SELECT
Pb battery
PROGRAM SELECT
SAVE DATA
PROGRAM SELECT
LOAD DATA
USER'S SET
PROGRAM SELECT
NiMH CHARGE
'Aut'
NiMH CHARGE
'Man' NiMH DISCHARGE NiMH CYCLE
NiCD CHARGE
'Aut'
NiCD CHARGE
'Man' NiCD DISCHARGE NiCD CYCLE
Pb CHARGE Pb CHARGE
SAVE DATA
LOAD DATA
Capacity Cut-off Key Beep Buzzer
Back-light
brightness
Input Power
Low Cut-off
Safety Time NiMH/NiCd/Pb
Trickle Charge
CHG>DCHG
Waste Time
Temp Cut-off
NiCD D.Peak
Sensitivity
NiMH D.Peak
Sensitivity
LiPo/LiIo/LiFe
CHK Time
LiXX V.Type
Program flow chat
Program flow chat
Program flow chat

This inf orms you of it s designation.
The screen displays the nominal voltage of Lit hium
batt ery. There are three kinds of Lithium ba tt ery:
LiFe(3. 3V), Lilo(3.6V) or LiP o(3.7V ). This is very
import ant so you have t o check t he bat tery caref ully
and set it up correct ly. I f it is diff erent f rom correct
value the bat tery explode during charge process.
B8 PRO recognize t he cell count of Lit hium bat tery
automat ically at t he beginning of charge or
discharge process t o avoid from erroneous sett ing
by user. But deeply discharged batt ery can be
perceived incorrect ly. To prevent t he error, you can
set t he t ime term t o verif y t he cell count by t he
processor. Normally, 10 minut es are enough to
perceive t he cell count correct ly. For t he bat tery of
larger capacity, you may extend t he t ime t erm. But if
you set t he t ime t erm to long f or the bat tery of
smaller capacit y, t he charge or discharge process
can be finish ed within t he t ime t erm wit h the
erroneous cell count . This may cause the f atal
result . If t he pr ocessor recognizes t he cell count
incorrectly at t he beginning of charge or discharge
process, you may extend t he t ime. Ot herwise, you
had bet ter use with t he def ault value.
This shows t he t rigger volt age for automat ic charge
termination of NiMH and NiCd bat tery. The effective
value ranges f rom 5 to 20mV per cell. I f t he t rigger
voltage is set higher, t here is a danger of
overcharging the bat t ery; if it is set lower, t here is a
possibilit y of premat ure termination. Please refer
the t echnical specifi cat ion of t he batt ery. (NiCd
default : 12mV, NiMH default : 7mV)
An optional f eat ure using temperature probe
contacting t he surface of bat tery, t he t emperat ure
cut-off can be on or off. I f it is on, set the maximum
temperature at which t he charger should allow
batt ery t o reach during charge. Once a bat tery
reaches this temperature during charge, t he
process will be t erminat ed t o prot ect t he bat tery.
The bat tery is on t he cyclic process o f charge and
discharge can of ten become warm aft er charge or
discharge period. The program can insert a t ime
delay t o occur af ter each charge and discharge
process t o allow t he batt ery adequate t ime to cool
down bef ore being su bject ed t o the next process.
The value ranges f rom 1 to 6 0 minut es.
You can set t he t rickle charge mode on or off. I f it is
on, t he charger will aut omat ically supply the t rickle
charge current t o achieve the f ull charge without
overheatingt he bat tery af ter f ast charge has been
terminated.
When you start a charge process, t he int egral safet y
timer aut omat ically st art s running at t he same t ime .
This is programmed t o prevent overcharge t he
batt ery if it proves t o be fault y, or if t he terminat ion
circuit cannot det ect t he bat te ry full. The value for
the saf et y t imer should be generous enough to
allow a f ull charge of the bat tery.
INCDEC
INC
DEC INC
DEC INC
INCDEC
INCDEC
DEC INC
DEC INC
DEC INC
DEC INC
INCDEC
09 10
B8 PRO 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 then change the value with Inc> or <Dec key. The value will be stored
by pressing Start/Enter key once.
Temp. Cut-off
ON 80C
NiCD Seneitivity
D.Peak Default
NiMH Seneitivity
D.Peak Default
LiPo/LiIo/LiFe
CHK Time 10min
LiFe V.Type
9.9V
USER SET
PROGRAM
Initial parameter set up(Users set up)
Initial parameter set up(Users set up)
Initial parameter set up(Users set up)

Th is pro gra m set s t he maximu m cha rge ca pa cit y
that will be supplied t o the batt ery during charge.
If t he delt a-peak volt age is not det ect ed nor the
safet y t imer expired by any reason, this f eature
will automat ically st op t he process at t he
select ed capacit y value.
The beep sounds at every t ime pressing t he
butt ons to confi rm your action. The beep or
melody sounded at various times during
operation t o alert diff erent mode changes. These
audible sounds can be t urned on or off.
INCDEC
DEC INCDEC INC
INCDEC
DEC INC
DEC INCDEC INC
INCDEC
This program monit ors t he volt age of input
batt ery. I f t he volt age drops below the value you
set t he operat ion f orcibly t erminated t o pro tect
the input batt ery.
You can adjust t he bright ness of LCD screen at
the charger.
DEC INCDEC INC
INCDEC
DEC INC
DEC INC
DEC INC
INCDEC
INCDEC
INCDEC
11 12
Initial parameter set up(Users set up)
Initial parameter set up(Users set up)
Initial parameter set up(Users set up)
Capacity Cut-off
ON 500mAh
Key Beep ON
Buzzer ON
Input Power Low
Cut-off 10.0V
Back-light
100%
Waste Time
CHG/DCHG 5min
NiMH/NiCD/Pb
Trickle 100mA
Safety Time
ON 120min

The lef t side of the fi rst line shows t he t ype of
batt ery you select at t he users sett ing. The valu e
on t he lef t side of second line set s a charge current
and the value on t he right side of second line sets
the volt age of t he bat tery pack.
Af ter set ting the current and volt age press
Start/ Enter key f or more t han 3 seconds to start
the process. (Charge current : 0. 1~0.7A ,
Voltage: 1~8 series)
This shows the numb er of cells you set up and
the processor detect s. 'R' shows t he number of
cells f ound by t he charger and 'S' is t he number
of cells select ed by you at the previous screen. If
both numbers are ident ical you can st art charging
by pressing S tart/ Enter butt on. I f not press
Batt.type/ Stop but ton t o go back t o previous
screen. Then caref ully check the number of cells
of the bat t ery pack t o charge again.
The screen shows the prese nt situat ion during
charge process. To stop charging press
Batt.type/ Stop key once.
D i s p l a y
DEC INCDEC INC
Batt type
stop
Start
Enter`>3seconds`
Start
Enter
Li3s 2.0A 12.59V
CHG 022:43 00682
number
of
cells
charging
time
charge
current
battery
voltage
charged
capacity
These programs are only suit able f or charging and discharging Lit hium bat teries wit h
a nominal voltage of 3. 3V, 3. 6V and 3. 7V per cell. These bat teries need t o adopt
diff erent charge t echnique that is termed a const ant voltage (CV ) and const ant
current (CC) met hod. The charge current varies according t o the batt ery capacit y and
The fi nal volt age of charge process is also very import ant ; it should be precisely
mat ched wit h the charade volt age of t he bat tery. They are 4.2V f or LiPo, 4. 1V f or Lilo,
and 3. 6V f or LiFe. The charge current and nominal voltage as for cell count set on t he
charge program must always be correct f or t he bat tery t o be charged.
When you are willing t o alt er t he paramet er value in t he program, press Start/ Ent er
key t o make it blink t hen change the value wit h I nc> o r <Deckey. The value will be
st ored by pressing st art /ent er key once.
13 14
LiPo CHARGE
2.0A 11.1V(3S)
R:3SER S:3SER
CONFIRM(ENTER)
Lithium battery(LiPo/LiFe/LiIo) program
Lithium battery(LiPo/LiFe/LiIo) program
Charging Lithium battery
Charging Lithium battery
performance.

The charging current is gett ing smaller as the process goes to t he near end term of
Lit hium batt ery charging. To fi nish charging process earlier, t his program eliminat e
cert ain t erm of CV process. The charging current will goes t o 1/ 5 from the initial value
to end t he process while t he normal charging goes t o 1/ 10 during CV t erm. The
charging capacit y may be a bit smaller t han normal charging but t he process time will
This is f or charging or discharging Lit hium bat tery not t o be used for the t ime being.
The program will det ermine t o charge or discharge the bat tery to t he certain volt age
depending on t he volt age of t he batt ery at it s init ial stage. They are diff erent f rom
the t ype of t he bat ter, 3.75V f or Lilo, 3. 85V f or LiPo and 3. 3V f or LiFe per cell. I f the
voltage of bat tery at it s init ial st age is over t he volt age level to storage. The program
will st art t o discharge.
DEC INCDEC INC
Batt type
stop
Start
Enter`>3seconds`
Li3s 2.0A 12.59V
STO 022:43 00682
number
of
cells
elapsed
time
charge
or
discharge
current
supplied
capacity
Current
voltage of
battery
You can set up t he charging current and t he
voltage of t he bat tery pack being charged. A s
you press S tart/ Enter but ton the volt age
confirmation will be displayed. And then, if you
confirm the volt age and current, press
Start/ Enter but ton again t o start charging.
This shows t he present state of 'FAST'
charging. To st op charging arbit rary, press
Batt.type/ Stop key once.
You can set up t he current and t he volt age of
the bat tery pack t o be charged. The current will
be used f or charge or discharge t he bat tery to
reach t he 'st orage' level of volt age.
The screen shows the prese nt situat ion during
charge process. To stop charging press
Batt.type/ Stop key once.
DEC INCDEC INC
Batt type
stop
Start
Enter`>3seconds`
LiPo STORAGE
2.0A 11.1V(3S)
Li3s 2.0A 12.59V
FAS 022:43 00682
LiPo FAST CHG
2.0A 11.1V(3S)
number
of
cells
elapsed
time
charge
current
supplied
capacity
Current
voltage of
battery
15 16
'Fast' charging Lithium battery
'Fast' charging Lithium battery
'Storage' control Lithium battery
'Storage' control Lithium battery
be reduced.

The value of disch arge current on t he lef t side
of screen may not exceed 1C f or a maximum
saf ety and the fi nal volt age on t he right should
not be under t he vo ltage level t hat is
recommended by the bat tery manufact ure to
avoid deep discharging.
To st art t o discharge press Start/ Enter key for
more t han 3 second s.
(Discharge current :0.1~5. 0A )
This shows t he present stat e of discharge. To
st op discharging press Batt.type/Stop key
once.
The processor monitors t he volt age of individual cells during 'storage-mode' and
'discharge' of Lit hium bat tery pack. I t tries t o normalize the volt age t o be equal. For
this feat ure, t he individual plug of t he bat tery pack should be connect ed t o the
individual port of the charger.
If t he volt age of an one or more cells varies abnormally d uring t he procedure, B 8 PRO
terminates the process forcibly wit h the error messages. I f t his happens, t he bat tery
pack contains the bad cell, or the bad connect ion of t he cable or plug. Y ou can easily
know which one cell is bad by pressing I nc> butt on at t ime of showing t he error
messages.
DEC INCDEC INC
Batt type
stop
Start
Enter`>3seconds`
elapsed
time
discharge
current
battery
voltage
discharged
capacity
INC
INC
The processor found t hat t he volt age of one of t he
cell in the Lit hium bat tery pack is t oo low.
In t his case, t he 4t h cell is bad. I f t here happen t he
connect ion-break of t he cable or plug, t he volt age
value may show zero.
17 18
C1:3.50 C2:3.52V
C3:3.48 C4:1.82V
BATTERY VOL ERR
CELL LOW VOL
Li3s 2.0A 12.59V
DSC 022:43 00682
LiPo DISCHARGE
2.0A 11.1V(3S)
Discharging Lithium battery
Dishcharging Lithium battery
Voltage balancing and monitoring during the discharge
Voltage balancing and monitoring
during the discharge
C5:3.46 C6:3.50V
C7:3.42 C8:3.48V

Set discharg e current on t he left an d fin al volt age
on t he right. The discharge curren t ran ges f rom
0. 1 t o 5. 0A an d th e fin al volt age range s f ro m0. 1
t o 30. 0V . t o sta rt the proce ss, press St art/ Ent er
key f or more t han 3 seconds.
The screen d isplays t he current st ate of d ischa rge.
You can a lter t he disch arge curren t by pressing
St art/ Ent er key during t he process. Once you
cha nge the curren t value, st ore it by pressin g
St art/ Ent er but t on ag ain . To st op disch arging
press B at t.typ e/ St op key once. The audible
sou nd indica te s you at t he e nd of process.
These programs are for charging or discharging NiMH(Nickel-Metal-Hydride) or
NiCd(Nickel-Cadmium) bat tery commonly used f or R/ C model applicat ions. To alt er
the value at t he display, press Start/E nter key t o make it b link t hen change t he value
using Inc> a nd <De c key. The value will be st ored by pressing Start/E nter key once.
To st art t he process, press Start/Enter but ton for more t han 3 seconds.
This program simply charges t he bat tery using
the current you set . In 'A ut' mode,Y ou need to
set the upper limit of charge current to avoid
from higher f eeding current t hat may damage
the bat tery. Because some bat teries of low
impedance and small capacity can lead t o the
higher charge current by t he processor at
automat ic charge mode. But in 'Man' mode, it
will charge t he bat tery wit h the charge current
you set at t he display. Each mode can be
swit ched by pressing I nc> a nd <Dec but ton
simult aneously when t he current fi eld is
blinking.
The screen displays the current st at e of
charging. To st op t he process, press
Bat t.t ype/ Stop key once. The audible sound
indicated you t he end of process.
DEC INC
Batt type
stop
Start
Enter`>3seconds`
NiMH 2.0A 7.24V
CHG 022:45 00890
elapsed
time
charge
current
battery
voltage
discharged
capacity
DEC INC
Batt type
stop
Start
Enter`>3seconds`
battery
type
elapsed
time
NiMH 2.0A 7.24V
DSC 022:45 00890
charge
current
battery
voltage
discharged
capacity
DEC INC
battery
type
19 20
NiMH CHARGE Aut
CUR LIMIT 5.0A
NiCd/NiMH battery program
NiCd/NiMH battery program
Discharging NiCd/NiMH battery
Discharging NiCd/NiMH battery
NiMH DISCHARGE
3.0A 11.5A
Charging NiCd/NiMH battery

Set t he sequence on the lef t and the number of
cycle on t he right . You can use t his f unct ion f or
balancing, refreshing and break-in t he batt ery.
To avoid rising temp erat ure of t he bat tery, t here
will b e a brief cool-off period t hat already fi xed at
'User set ting' af ter each charge and discharge
process. The cycling number rang es f rom 1 to 5.
To st op t he process, press Batt.type/Stop key
once.
You can change t he discharge or charge cu rrent
by pressing Start/ Enter key once during t he
process. The audible sound indicat es you t he end
of process.
At t he end of t he process, you can see charged or
discharged elect ric capacities of the bat t ery at
each cyclic process. By pressing I nc> or <De c
butt on, t he screen shows t he result of each cycle
in order.
DEC INC
Batt type
stop
Start
Enter`>3seconds`
elapsed
time
discharge
or charge
current
battery
voltage
DEC INC
discharge
or charge
capacity
battery
type
This is programmed f or charging Pb(lead-acid) bat tery wit h nominal voltage f rom
2 to 36V. P b bat te ries are tot ally different f rom NiCd or NiMH batt eries. They can
only deliver relat ively lower current compare to their capacit y, and similar rest rictions
definit ely apply t o charge. S o the opt imal charge current will be 1/10 of t he capacit y.
Pb batt eries must not be charged rapidly. A lways follow t he inst ruct ion is supplied by
the manuf act ure of bat tery.
When you are willing t o alt er t he paramet er value in t he program, press S tart/ Ent er
key t o make it blink t hen change the value wit h I nc> o r <De c key. The value will be
st ored by pressing St art /E nter key once.
Set up the charge current on t he lef t and the
nominal volt age of t he batt ery on t he right . The
charge current ranges f rom 0. 1 to 7. 0A and t he
voltage sh ould be mat ched wit h the bat tery
being charged.
St art t he charge process by pressing St art /E nter
key f or more than 3 seconds.
The screen displays the st at e of charging process.
To st op charging forcibly, press Bat t.type/ St op
key once. The audible sound indicates you at t he
end of process.
DEC INC
Batt type
stop Start
Enter`>3seconds`
DEC INC
NiMH 2.0A 7.24V
D>C 022:45 00890
Pb-6 4.0A 12.59V
CHG 022:43 00682
elapsed
time
charge
current
battery
voltage
charge
capacity
21 22
Pb CHARGE
4.0A 12.0V(6P)
Charge-to-discharge & discharge-to-charge cycle NiCd/NiMH battery
Charge-to-discharge & discharge-
to-charge cycle NiCd/NiMH battery
Pb(Lead-sulphuric acid) battery program
Pb(Lead-sulphuric acid) battery program
Charging Pb battery
NiMH CYCLE
DHCG>CHG 3
DCHG 1 1314mAh
CHG 1 1430mAh

DEC INC
Batt type
Stop Start Enter`>3seconds`
DEC INC
battery
type
elapsed
time
discharge
current
battery
voltage
discharge
capacity
13-1415-1617-1819-2021-2223-2425-2627-2829-3031-3233-3435-36
The paramet er value set ting up in this screen does
not aff ect charge or discharge process. They only
represent t he specifi cation of t he batt ery. The
following screens will aut omat ically be displayed
exact ly matched wit h the batt ery t ype you set up.
The example shows t he bat tery pack of NiMH, 12
cells and 3000mA h of capacit y.
Set ting up discharge curren t and fi nal voltage
Set ting up t he sequence of charge and discharge,
and the cycling number
Saving t he dat a
Start
Enter
Type of
batterycapacity
voltage date
number
Batt type
Stop
Start
Enter`>3seconds`
DEC INC DEC INC
DEC INCDEC INC
DEC INC
PROGRAM SELECT
SAVE DATA
SAVE [01] NiMH
14.4V 3000mAh
NiMH CHARGE AT*
CUR LIMIT 5.0A
NiMH DISCHARGET*
40A 11.0v
NiMH CYCLE *
DCHG>CHG 3
Pb DISCHARGE
4.0A 12.0V(6P)
Pb-6 4.0A 12.59V
DSC 022:43 00682
DEC INCDEC INC
Start
Enter`>3seconds`
Save...
23 24
Discharging Pb Battery
Discharging Pb Battery Save Data Program
Discharging Pb Battery
Save Data Program
B8 PRO 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.
Set up the charge current for manual charge mode,
or the current limit for automatic charge mode.
Each mode can be switched by pressing Inc> and
<Dec button at the same time when the current
field is blinking.
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.
The screen displays the current state of discharge.
You can alter the discharge current by pressing
Start/Enter key during the process. Once you
change the current value, store it by pressing
Start/Enter button again.
To stop discharging press Batt.type/Stop key once.
The audible sound indicates you at the end of
process.

The fi nal volt age will be reached at t he end of
process.
The int ernal t emperature of t he charger and t he
temperature of bat tery being charged.
(The external temperature o nly will be displayed
when using the t hermal probe. )
The present voltage of input DC power.
Select t he data number t o be called back.
The dat a mat ched wit h the number will be displayed
at this time.
Loadingthedata.
Start
Enter
Start
Enter`>3seconds`
D i s p l a y
DEC
DEC
DEC
DEC
DEC
INC
Using the individual connection cable t o the
batt ery, you can check the individual voltages of
each cell in t he bat tery pack. When connect t he
cable to t he port on t he right side of t he charger
t he progra m sho ws t he m for maximu m 8 ce lls in
sequence. To ut ilize t his feat ure, t he bat tery pack
must have out put connect or that linked t o each
cells.
25 26
Load Data Program
Load Data Program Various Information during the process
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 select
the number using Inc> or <Dec key then press Start/Enter key for more than 3
seconds.
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.
PROGRAM SELECT
LOAD DATA
LOAD [01] NiMH
14.4V 3000mAh
LOAD...
Capacity Cut-Off
ON 5000mAh
Safety Time
ON 200min
Temp Cut-Off
OFF 80C
Ext. Temp 26Cf
Int. Temp 30C
IN Power Voltage
12.56V
C1:4.12 C2:4.09V
C3:4.09 C4:4.10V
C1:4.18 C2:4.15V
C3:4.08 C4:4.12V
End Voltage
12.6V(3S)

T he out put is connec t ed to a bat tery wit h
inc orrec t polarit y
A short-circuit at out put. Please check t he
charging leads.
Th e v olt ag e of Lit hiu m b at tery pac k wa s
s ele c ted inc orre c tly . Verif y t he v olt ag e o f
bat te ry bac k c a re fully .
The volt age of one of t he cell in t he Lit hium
batt ery pack is t oo low. Please check the
voltage of t he cell one by one.
The volt age of one of t he cell in t he Lit hium
batt ery pack is t oo high. Please check the
voltage of t he cell one by one.
There is bad connect ion at t he individual
connect or. Please check t he connector and
cables caref ully.
The internal temperature of the unit goes too
high. Cool down the unit.
27 28
Warning and Error messages
Warning and Error messages Warning and Error messages
The processor can not continue to control the
feeding current by any reason. The unit needs
to be repaired.
The processor detects the voltage is higher
than you set at Lithium program. Please check
the cell count of the battery pack.
The processor detects the voltage is lower
than you set at Lithium program. Please check
the cell count of the battery pack.
There happens the malfunction at the charger
circuit by any reason.
The voltage of input power drops below the limit.
This will be displayed in case of detecting an
interruption of the connection between battery
and output or voluntarily disconnecting the
charge lead during the operation of charge or
discharge on output.
REVERSE POLARITY
CONNECTION BREAK
SHOT ERR
INPUT VAL ERR
VOL SELECT ERR
BREAK DOWN
BATTERY CHECK
LOW VOLTAGE
BATTERY CHECK
HIGH VOLTAGE
BATTERY VOLTAGE
CELL LOW VOL
BATTERY VOLTAGE
CELL HIGH VOL
BATTERY VOLTAGE
CELL CONNECT
TEMP OVER ERR
CONTROL FAILURE
B8 PRO 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.

We warrant this product for a peri od of one year(12 months) from the date of
purchase. The guarantee appli es onl y to such materi al or operati onal
defects, whi ch are present at the ti me of purchasi ng the product. Duri ng
that peri od, we will repai r or repl ace without servi ce charge any product
deemed defective due to those causes. You wil l be requi red to present proof
of purchase (i nvoice or receipt). Thi s warranty does not cover the damage
due to wear, overloadi ng, incompetent handl ing or using o f i ncorrect
accessories.
Operat ing volt age range: 10. 0~18. 0V olt
Circuit power: max. 150W
Charge current range: 0.1~7. 0A
Discharge current range: 0. 1~5. 0A
Current drain f or balancing Li-Po: 300mAh/ cell
NiCd/NiMH bat t ery cell count: 1~27 cells
Lit h iu m bet t ery ce ll co un t : 1 ~8 S erie s
Pb batt ery volt age: 2 t o 36V
Weight : 574g(Net Weight )
Dimensions: 170X110X35mm
29
Specifications
Specifications
Warranty and Services