SkyRC B6AC+ V2 Charger User Manual

Version 2

AC/DC Professional Balance Charger/Discharger

SkyRC Technology Co., Ltd. 2014

Version 1.0

TABLE OF CONTENTS

INTRODUCTION

SPECIAL FEATURES

WARNING AND SAFETY NOTES

PROGRAM FLOW CHART

OPERATION

OPERATING PROGRAM

CHARGING PROGRAM

BATTERY MEMORY SET AND CALL OUT

SYSTEM SETTING

BATTERY METER

BATTERY RESISTANCE METER

WARNING AND ERROR MESSAGE

USING THE CHARGE CONTROL SOFTWARE “CHARGE MASTER”

THE SET CONTAINS

SPECIFICATION

CONFORMITY DECLARATION

COMMONLY USED TERMS

WARRANTY AND SERVICE

01

03

05

08

09

10

13

14

16

18

19

20

21

21

22

23

24

25

INTRODUCTION

Congratulations on your choice of SKYRC B6AC+ Version 2(V2)
AC/DC Input Professional Balance Charger/Discharger. This unit is
simple to use, but the operation of a sophisticated automatic charger
such as SKYRC B6AC+ does require some knowledge on the part of
the user. These operating instructions are designed 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 charger for the first time. We
hope you have many years of pleasure and success with your new
battery charger.

SKYRC B6AC+ V2 is the upgraded version for well-known IMAX
B6AC+. Compared with B6AC+ V1, it is more accurate and stable and
also has some new features and functions. Users could set the terminal
voltage by themselves and connect it to PC for PC control and firmware
upgrade. What's more, users could also use it as Lithium Battery Meter
and Battery Internal Resistance Meter. There are Automatic Charging
Current Limit, Capacity Limit, Temperature Threshold and Processing
Time Limit which makes the charger safer than V1.

SKYRC B6AC+ V2 is a high-performance, micro processor control
charge/discharge station with battery management suitable for use with
all current battery types, with integral equalizer for six-cell Lithium­Polymer (LiPo), Lithium iron phosphate(LiFe) and Lithium-Ion (LiIon)
batteries; maximum 6A charge current and maximum 50W charge
power. It can be powered by 11-18V DC source or from 100V-240V via
the built in switch-mode power supply.

Please BE SURE to read these INSTRUCTIONS, 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.

B6AC+ V2

01 ·

INTRODUCTION

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

LCD Display

Scroll Through the Main Menu
Stop Any Charge Processes

Alter Values
See the Status of Individual
Cells in Balance Charge Mode

Resume or Start Charge Processes
Confirm Any Action

AC Input Power Port
AC 100-240V 50-60Hz

DC Input Power Port
DC 11-18V

Micro USB Port for
PC Link / WiFi Module
Connection

· 02

Balance Lead Socket
JST-XH Ports

Output Charge Lead
4mm Banana Plug

Temperature
Sensor Port

B6AC+ V2

SPECIAL FEATURES

Optimized Operating Software

SKYRC B6AC+ V2 features the so-called AUTO function that set the feeding current
during the process of charging or discharging. Especially for lithium batteries, it can
prevent the overcharging which may lead 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!

Battery Memory (Data Store/Load)

The charger can store up to 10 different charge/discharge profiles for your convenience.
You can keep the data pertaining to program setting of the battery of continuous charging
or discharging. Users can call out these data at any time without any special program
setting.

Terminal Voltage Control(TVC)

The charger allows user to change the end voltage. (for expert user only)

PC Control Software “Charge Master”

The free “Charge Master” software gives you unparalleled ability to operate the charger
through the computer. You can monitor pack voltage, cell voltage and other data during
the charging, view charge date in real-time graphs. And you can initiate, control charging
and update firmware from “Charge Master”.

Smart Phone Control via WiFi Module (both iOS and Android)

Finally, your charger gets its own apps. This charger can be controlled and operated by
smart phones via WiFi module(option part SK-600075).

Internal Independent Lithium Battery Balancer

SKYRC B6AC+ V2 employs an individual-cell-voltage balancer. It isn't necessary to
connect an external balancer for balance charging.

Balancing Individual Cells Battery Discharging

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

Adaptable to Various Type of Lithium Battery

SKYRC B6AC+ V2 is adaptable to various types of lithium batteries, such as LiPo, LiIon
and the new LiFe series of batteries.

B6AC+ V2

SKYRC B6AC+ V2

03 ·

SPECIAL FEATURES

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.

Re-Peak Mode of NiMH/NiCd Battery

In re-peak charge mode, the charger can peak charge the battery once, twice or three
times in a row automatically. This is good for making certain the battery is fully charged.

Delta-peak Sensitivity for NiMH/NiCd

Delta-peak sensitivity for NiMH/NiCd battery: The automatic charge termination program
based on the principle of the Delta-peak voltage detection. When the battery's voltage
exceeds the threshold, the process will be terminated automatically.

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.

Automatic Charging Current Limit

You can set up the upper limit of the charging current when charging your NiMH or NiCd
battery, it is useful for the NiMH battery of low impedance and capacity in the 'AUTO'
charging mode.

LiPo Battery Meter

The user can check battery's total voltage, the highest voltage, the lowest voltage and
each cell's voltage.

Battery Internal Resistance Meter

The user can check battery's total internal resistance and each cell's internal resistance.

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 the temperature limit is reached, the process will be terminated.

This function is available by connecting optional temperature probe, which is not included in the package.

*

Processing Time Limit:

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

· 04

B6AC+ V2

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 can cause 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 the
operation manual.

Keep the charger well away from dust, damp, rain, heat, direct sunshine and .

vibration

Never drop it.

The allowable DC input voltage is 11~18V DC

The allowable AC input voltage is 100~240V AC

This charger and the battery should be put on a heat-resistant, noninflammable and
nonconductive surface. Never place them on a car seat, carpet or similar. Keep all
the inflammable volatile materials away from operating area.

Make sure you know the specifications of the battery to be charged or discharged to
ensure it meets the requirements of this charger. If the program is set up incorrectly,
the battery and charger may be damaged .It can cause fire or explosion due to
overcharging.

Standard Battery Parameters

LiIon

3.6V/cell

4.1V/cell

3.7V/cell

≦1C

Nominal
Voltage

Max Charge
Voltage

Storage
Voltage

Allowable
Fast Charge

Min. Discharge
Voltage

LiPo

3.7V/cell

4.2V/cell

3.8V/cell

≦1C

3.0-3.3V/cell 2.9-3.2V/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.

LiFe

3.3V/cell

3.6V/cell

3.3V/cell

≦4C

2.6-2.9V/cell 0.1-1.1V/cell 0.1-1.1V/cell

NiCd

1.2V/cell

1.5V/cell

n/a

1C-2C

MiMH

1.2V/cell

1.5V/cell

n/a

1C-2C

Pb

2.0V/cell

2.46V/cell

n/a

≦0.4C

1.8V/cell

B6AC+ V2

05 ·

WARNING AND SAFETY NOTES

Never attempt to charge or discharge the following types of batteries.

A battery pack which consists of different types of cells (including different
manufacturers)
A battery that is already fully charged or just slightly discharged.
Non-rechargeable batteries (Explosion hazard).
Batteries that 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
and in series, i.e. a 2 cell pack can be 3.7V (in parallel) or 7.4V (in series).
Have you checked that all connections are firm and secure?
Make sure there are no intermittent contacts at any point in the circuit.

Charging

During charge process, a specific quantity of electrical energy is fed into the battery.
The charge quantity is calculated by multiplying charge current by charge time. The
maximum permissible charge current varies depending on the battery type or its
performance, and can be found in the information by the battery manufacturer. Only
batteries that are expressly stated to be capable of quick-charge are allowed to be
charged at rates higher than the standard charge current.

Connect 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, the
charger can not detect resistance of the battery pack, the essential requirement
for the charger to work properly is that the charge lead should be 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 battery manufacturer about charging methods,
recommended charging current and charging time. Especially, the lithium battery
should be charged according the charging instruction provided by the manufacturer
strictly.

· 06

B6AC+ V2

WARNING AND SAFETY NOTES

Attention should be paid to the connection of lithium battery especially.

Do not attempt to disassemble the battery pack arbitrarily.

Please get highlighted that lithium battery packs can be wired in parallel and in series.
In the parallel connection, the battery s capacity is calculated by multiplying single
battery capacity by the number of cells with total voltage stay the same. The voltages
imbalance may cause fire or explosion .Lithium battery is recommended to charge in
series.

Discharging

The main purpose of discharging is to clean residual capacity of the battery, or to
reduce the 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 deep-discharging. Lithium battery can not be discharged to lower
than the minimum voltage, or it will cause a rapid loss of capacity or a total failure.
Generally, lithium battery doesn't need to be discharged. Please pay attention to the
minimum voltage of lithium battery to protect the battery.

Some rechargeable batteries have a memory effect. If they are partly used and
recharged before the whole charge is accomplished, they remember this and will only
use that part of their capacity next time. This is a memory effect. It is said that NiCd
and NiMH batteries are suffering from memory effect. NiCd has more memory effect
than NiMH.

B6AC+ V2

07 ·

PROGRAM FLOW CHART

DECINC

DECINC

DECINC

DECINC

DECINC

DECINC

Pb BATT

DECINC

BATT METER

DECINC

DECINC

DECINC

Batt Type

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

Stop

START

ENTER

ENTER

START

ENTER

START

BATT/PROGRAM
LiPo BATT

BATT/PROGRAM
LiFe BATT

BATT/PROGRAM
LiIo BATT

BATT/PROGRAM

NiMH BATT

BATT/PROGRAM

NiCd BATT

BATT/PROGRAM

BATT/PROGRAM

BATT/PROGRAM
BATT RESISTANCE

BATT/PROGRAM
SYSTEM SETTING->

BATT/PROGRAM
BATT MEMORY

LiPo BALANCE CHG

2.0A 7.4V (2S)

LiFe BALANCE CHG

2.0A 6.6V (2S)

Lilo BALANCE CHG

2.0A 7.2V (2S)

NiMH CHARGE
CURRENT 2.0A

NiCd CHARGE
CURRENT 2.0A

Pb CHARGE

2.0A 2.0V (1P)

MAIN 0.00V

4.20 4.19 4.19 V

0.00 0.00 0.00 V

005 003 003 mΩ
005 mΩ

Safety Timer
ON 120Min

Serial Number:
000000

[ BATT MEMORY 1 ]
ENTER SET->

STARG/ENTER>3 Seconds

ENTER CHARGER
LOAD……

[ BATT MEMORY 2 ]
ENTER SET->

[ BATT MEMORY 2 ]
C:1.0A D:1.0A

ENTER CHARGER
LOAD……

[ BATT MEMORY 3 ]
ENTER SET->

Pb CHARGE

3.3A 4.0V(2P)

Pb DISCHARGE

1.5A 4.0V(2P)

INC

DEC

INC

DEC

INC

DEC

INC

DEC

INC

DEC

INC

DEC

(Connect the main battery socket)

INC

DEC

INC

DEC

INC

DEC

START

ENTER

INC

DEC

START

ENTER

INC

DEC

START

ENTER

INC

DEC

LiPo CHARGE

2.0A 7.4V (2S)

LiFe CHARGE

2.0A 6.6V (2S)

Lilo CHARGE

2.0A 7.2V (2S)

NiMH Auto CHARGE
CURRENT 2.0A

NiCd Auto CHARGE
CURRENT 2.0A

Pb DISCHARGE

0.1A 2.0V (1P)

MAIN 0.00V
H0.000V L0.000V

TATAL: 16mΩ
H: 5mΩ L: 3mΩ

Capacity Cut-Off
ON 5000mAH

Version
HW:1.00 FW: 1.10

BATT TYPE
LiPo

[ BATT MEMORY 1 ]
C:4.9A D:2.2A

LiPo BALANCE CHG

4.9A 7.4V(2S)

BATT TYPE
MiMH

[ BATT MEMORY 2 ]
NiMH 2.4V (2S )

NiMH CHARGE
CURRENT 1.0A

BATT TYPE
Pb

ENTER CHARGER
LOAD……

STARG/ENTER>3 Seconds

INC

LiPo FAST CHARGE

2.0A 7.4V (2S)

DEC

INC

LiFe FAST CHARGE

2.0A 6.6V (2S)

DEC

INC

Lilo FAST CHARGE

2.0A 7.2V (2S)

DEC

INC

NiMH DISCHARGE

0.1A CUT: 1.0V

DEC

INC

NiCd DISCHARGE

0.1A CUT: 1.0V

DEC

INC

LiPo STORAGE

2.0A 7.4V (2S)

DEC

INC

LiFe STORAGE

2.0A 6.6V (2S)

DEC

INC

Lilo STORAGE

2.0A 7.2V (2S)

DEC

INC

NiMH RE-PEAK
1

DEC

INC

NiCd RE-PEAK
1

DEC

(Connect battery via balance board)

INC

Temp Cut-Off
ON 50°C 122°F

DEC

INC

Load Factory Set
Enter

DEC

INC

BATT VOLTS

7.4V ( 2S )

DEC

[ BATT MEMORY 1 ]
LiPo 7.4V (2S )

INC

LiPo CHARGE

4.9A 7.4V(2S)

DEC

INC

BATT VOLTS

2.4V (2S)

DEC

SAVE PROGRAM
SAVE….

INC

NiMH Auto CHARGE
CURRENT 1.2A

DEC

INC

BATT VOLTS

4.0V (2P)

DEC

[ BATT MEMORY 3 ]
C:3.3A D:1.5A

INC

Temperature Unit
Celsius

DEC

INC

Input. Power Low
Cut-Off 11.0V

DEC

INC

CHARGE CURRENT

4.9A

DEC

SAVE PROGRAM
SAVE….

INC

LiPo FAST CHARGE

4.9A 7.4V(2S)

DEC

INC

CHARGE CURRENT

3.3A

DEC

START

SAVE PROGRAM

ENTER

INC

NiMH DISCHARGE

1.0A CUT: 2.0V

DEC

INC

CHARGE CURRENT

3.3A

DEC

[ BATT MEMORY 3 ]
Pb 4.0V (2S )

ENTER

INC

LiPo DISCHARGE

2.0A 7.4V (2S)

DEC

INC

LiFe DISCHARGE

2.0A 6.6V (2S)

DEC

INC

Lilo DISCHARGE

2.0A 7.2V (2S)

DEC

INC

NiMH CYCLE
CHG>DCHG 1

DEC

INC

NiCd CYCLE
CHG>DCHG 1

DEC

INC

Rest Time
CHG>DCHG 10Min

DEC

INC

Key Beep ON
Buzzer ON

DEC

INC

DSCH CURRENT

2.2A

DEC

START

SAVE PROGRAM
ENTER

ENTER

INC

LiPo STORAGE

4.9A 7.4V(2S)

DEC

INC

TRICKLE
100mA

DEC

INC

DSCH VOLTAGE

1.1V/CELL

DEC

INC

NiMH RE-PEAK
2

DEC

INC

DSCH CURRENT

1.5A

DEC

SAVE PROGRAM
SAVE….

INC

NiMH Sensitivity
D.Peak Default

DEC

INC

NiCd Sensitivity
D.Peak Default

DEC

INC

DSCH VOLTAGE

3.0V/CELL

DEC

INC

TVC=YOUR RISK

4.20V

DEC

INC

LiPo DISCHARGE

2.2A 7.4V(2S)

DEC

INC

PEAK DELAY
1Min

DEC

INC

DSCH CURRENT

2.2A

DEC

INC

NiMH CYCLE
DCHG>CHG 1

DEC

INC

DSCH VOLTAGE

1.7V/CELL

DEC

START

SAVE PROGRAM

ENTER

DECINC

DECINC

DECINC

DECINC

ENTER

· 08

B6AC+ V2

OPERATION

BATT PROG / STOP Button:
It is used to stop the progress or go back to previous step/screen
DEC Button:
It is used to go through the menus and decrease the parameter value
INC Button:
It is used to go through the menus and increase the parameter value
ENTER / START Button:
It is used to enter parameter or store parameter on screen.

When you are willing to alter the parameter value in the program, press the
START/ENTER button to make it blink then change the value by pressing DEC and INC
button. The value will be stored by re-pressing the START/ENTER button. If there is
another parameter can be altered in the same screen, when you confirm the first
parameter value, the next parameter value will start to blink which means it is ready to
alert.

When you are willing to start the progress, press and hold the START/ENTER button for 3
seconds. When you are willing to stop the progress or go back to previous step/screen,
press the BATT PROG/STOP button once.

When you power on the charger, it will enter LiPo Battery balance program directly. You
could change the mode (balance mode, normal charge mode, fast charge mode, store
mode or discharge mode), enter the desired charging/discharging mode, set the referred
parameter and start the progress.

If you have no request for LiPo Battery program, please press the BATT PROG/STOP
button to enter BATT PROGRAM screen.

B6AC+ V2

09 ·

OPERATING PROGRAM

Here is the detailed procedure to make the charger work. All the screens and operations
will take Li-Po BALANCE CHARGE program for example,

1. Connection

1).

Connecting to power source

SKYRC B6AC+ V2 comes with the built in switching power supply. You can connect
the AC power cord directly to the main AC socket. (100-240V AC).

Connecting the battery

2).
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.

Balance Socket

3).

It is for lithium battery in all mode.

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!
(See the wiring diagram below.)
This diagram shows the correct way to connect your battery to the SKYRC B6AC+
V2 while charging in the balance charge program mode.

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.

· 10

B6AC+ V2

OPERATING PROGRAM

2. Getting started

Locate the flowcharts show the entire programming menu. It is highly recommended to
have these flowcharts handy while learning to operate this charger.
There are two main ways in which to set the charger.

(1)

A memory profile is available for setting and storing pertinent information for up to
10 different batteries. Once a battery's information is stored into a memory it will be
retained until changed again manually. Recalling a battery's memory number
makes the charger instantly ready to go!

(2)

If you do not wish to use the battery memories, this charger can be manually set
before each use.

For following step, all are basing on manually set

B A T T / P R O G R A M
L i P o B A T T

STA RT /E NT ER

3. BATT/PROGRAM Select

Press INC and DEC to go through all the programs and press
START/ENTER to enter LiPo BATT Program.

L i P o B A L A N C E C H G
2 . 0 A 1 1 . 1 V ( 3 S )

STA RT /E NT ER

L i P o B A L A N C E C H G
2 . 0 A 1 1 . 1 V ( 3 S )

STA RT /E NT ER

L i P o B A L A N C E C H G
2 . 0 A 1 1 . 1 V ( 3 S )

STA RT /E NT ER

L i P o B A L A N C E C H G
2 . 0 A 1 1 . 1 V ( 3 S )

STA RT /E NT ER
> 3 Se co nd s

B A T T E R Y C H E C K
W A I T . . .

R : 3 S E R S : 3 S E R
C A N C E L ( S T O P )

B6AC+ V2

4. Mode Select

Press INC and DEC to go through all the modes and press
START/ENTER to enter LiPo Balance Charge Mode.

5. Battery Setting

Press START/ENTER, the current value will start to blink, press
INC and DEC to change the value and press START/ENTER to
confirm your setting.
At the same time, the battery cells number will start to blink,
press INC and DEC to change the value and press
START/ENTER to confirm your setting.

6. Program Start

Press and hold START/ENTER for 3 seconds to start the
program.

The charger is detecting the battery cell.

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 not identical, press STOP to go back to previous
screen to recheck the number of cells of the battery pack before
going ahead.

11 ·

OPERATING PROGRAM

R : 3 S E R S : 3 S E R
C O N F I R M ( E N T E R )

STA RT /E NT ER

L P 4 s 1 . 5 A 1 2 . 1 4 V
B A L 0 0 0 : 5 0 0 0 0 2 2

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, press START/ENTER to start charging process.

7. Charging Status Monitor

During charge process, real-time status will be showed as left screen.

VARIOUS INFORMATION DURING THE PROCESS

Press INC or DEC during charging or discharging process, you can inquire various
information on LCD screen .

L P 4 s 1 . 5 A 1 2 . 1 4 V
B A L 0 0 0 : 5 0 0 0 0 2 2

IN C

4 . 0 7 4 . 0 6 4 . 1 1 V
0 . 0 0 0 . 0 0 0 . 0 0 V

IN C

F u e l = 9 0 %
C e l l = 4 . 1 0 V

L P 4 s 1 . 5 A 1 2 . 1 4 V
B A L 0 0 0 : 5 0 0 0 0 2 2

DE C

DE C

DE C

Ext . Te mp - -- ­Int . Te mp 3 7 C

DE C

Tem p Cu t- Of f
　　　 50 C

DE C

DE C

Real-time status: battery type, battery cell, charge current, battery
voltage, elapsed time and charged capacity

Voltage of each cell in the battery pack when the battery is
connected with balance lead.

Charged capacity percentage and average cell voltage of the
battery pack.

Final voltage when the program ends.

Input voltage.

Internal temperature.
Temperature probe is needed to show external temperature.

Cut off temperature

Safety timer ON and duration of time in minutes.

Capacity cut-ofON and the setting value of capacity.

· 12

B6AC+ V2

OPERATING PROGRAM

8. Program Stop

During the charging process, press STOP to stop the charging process.

9. Program Complete

When the charging process finishes, an audible sound will be heard.

Charging Program

Depends on different battery type, the operation programs are different.

Batt
Type

LiPo
Lilon
LiFe

Operation
Program

CHARGE

DISCHARGE

STORAGE

FAST CHG

BAL CHARGE

This charging mode is for charging LiPo/LiFe/LiIon battery in normal mode.

This mode is for discharging LiPo/LiFe/LiIon battery.

This program is for charging or discharging lithium battery which
will not be used for long time.

The charging capacity may be a bit smaller than normal charging
but the process time will be reduced.

This mode is for balancing the voltage of lithium-polymer battery
cells while charging.

Description

NiMH
NiCd

Pb

B6AC+ V2

CHARGE

AUTO CHG

DISCHARGE

RE-PEAK

CYCLE

CHARGE

DISCHARGE

The charger will charge NiMH and NiCd batteries using the
charge current set by the user.

In this program the charger detects the condition of the battery
which is connected to the output and automatically charges the
battery.

Note: you should set up the upper limit of the charge
current to avoid damage by excessive feeding current.
Some batteries of low resistance and capacity can lead to
higher current.

This mode is for discharging NiMH/NiCd battery.

In re-peak charge mode, the charger can peak charge the
battery once, twice or three times in a row automatically. This is
good for confirming the battery is fully charged, and for checking
how well the battery receives fast charges.

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.

This mode is for charging Pb battery.

This mode is for discharging Pb battery.

13 ·

BATTERY MEMORY SET AND CALL OUT

The charger can store up to 10 different charge/discharge profiles for your convenience,
and the stored profiles can be recalled quickly without having to go through the setup
process.

When you are willing to alter the parameter value in the program, press START/ENTER to
make it blink then change the value with INC or DEC. The value will be stored by
pressing START/ENTER once.
Note: All following screen are taking 2S(7.4V) LiPo battery for example.

1. Battery Memory Set

[ BA T T M E M O R Y 1 ]
EN T E R S E T - >

STA RT /E NTE R

B AT T T Y P E
L iP o

DE C IN C

Enter the battery memory program.
(10 different charge/discharge profiles can be stored).

Set the battery type(LiPo/LiFe/LiIon/NiMH/NiCd/Pb).

B AT T V O L T S

7. 4 V ( 2 S )

DE C IN C

C HA R G E C U R R E N T

4. 9 A

DE C IN C

D SC H C U R R E N T

2. 0 A

DE C IN C

D SC H V O L T A G E

3. 0 V / C E L L

DE C IN C

T VC = Y O U R R I S K

4. 2 0 V

DE C IN C

S AV E P R O G R A M
EN T E R

STA RT /E NTE R

· 14

Set the voltage and number of cells(1S-6S).

Set the charge current(0.1-6.0A).

Set the discharge current (0.1A-2.0A).

Set the discharge voltage(3.0-3.3V/Cell).

Set the terminal voltage(4.18-4.25V).

Press ENTER to save program.

B6AC+ V2

S A V E P R O G R A M
S A V E … .

BATTERY MEMORY SET AND CALL OUT

[ B A T T M E M O R Y 1 ]
L i P o 7 . 4 V ( 2 S )

[ B A T T M E M O R Y 1 ]
C : 4 . 9 A D : 2 . 2 A

START/ENTER
>3 Seconds

E N T E R C H A R G E R
L O A D … …

L i P o B A L A N C E C H G
4 . 9 A 7 . 4 V ( 2 S )

Indicate the battery type and battery cell of the saved profile.

Indicate the charge and discharge current of the saved profile.
Press the START/ENTER for 3 seconds to call out the memory.

2. Battery Memory Call Out

Load the memory set

Press START/ENTER for 3 seconds to start the process.

B6AC+ V2

15 ·

SYSTEM SETTING

It will be operated with the default value of the essential user settings when it is powered
on 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 to
make it blink then change the value with INC or DEC. The value will be stored by
pressing START/ENTER once.

ITEM

S a f e t y T i m e r
O N 1 2 0 M i n

C a p a c i t y C u t - O f f
O N 5 0 0 0 m A H

T e m p C u t - O f f
O N 5 0 ° C 1 2 2 ° F

T e m p e r a t u r e U n i t
Ce ls i u s

SELECTION DESCRIPTION

When you start a charge process, the
integral safety timer automatically starts

OFF/
ON
(1-720 Min)

OFF/
ON
(100-50000 mAh)

OFF/
ON
(20 C/68 F ­80 C/176 F)

Celsius
Fahrenheit

ru nni ng a t the sam e ti me. Thi s is
programmed to prevent overcharge the
battery if it proves to be faulty, or if the
termination circuit cannot detect the battery
full. The value for the safety timer should be
generous enough to allow a full charge of
the battery.

This program sets the maximum charge
capacity that will be supplied to the battery
during charge. If the delta peak voltage is
not detected nor the safety timer expired by
any reason, this feature will automatically
stop the process at the selected capacity
value.

The battery's internal chemical reaction will
cause the temperature of the battery to
rise. If the temperature limit is reached, the
process will be terminated.

You can choose the temperature displayed
by Celsius or Fahrenheit as you like.

R e s t T i m e
C H G > D C H G 1 0 M i n

· 16

1-60Min

A rest time allowing the battery to cool
down between charging/discharging cycle.

B6AC+ V2

SYSTEM SETTING

ITEM

N i M H S e n s i t i v i t y
D . P e a k D e f a u l t

N i C d S e n s i t i v i t y
D . P e a k D e f a u l t

K e y B e e p O N
B u z z e r O N

I n p u t . P o w e r L o w
C u t - O f f 1 1 . 0 V

L o a d F a c t o r y S e t
En te r

V e r s i o n
H W : 1 . 0 0 F W : 1 . 1 0

S e r i a l N u m b e r :
00 00 0 0

SELECTION DESCRIPTION

This program is for NiMH/NiCd battery only.

Default: 4mV/Cell
5-15mV/Cell

OFF/ON

10.0-11.0V

When the charger detects the delta peak
value reaches the value you set, the
charger will say the battery is fully charged.

The beep sounds at every time touching
the buttons to confirm your action. The
beep or melody sounded at various times
during operation to alert different mode
changes.

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.

Press ENTER to load factory default setting.

It indicates the hardware and firmware
version.

It indicates the unique serial number of
this charger.

B6AC+ V2

17 ·

BATTERY METER

The user can check battery's total voltage, the highest voltage, the lowest voltage and
each cell's voltage.
Please connect the battery to the charger main battery lead to battery socket and balance
wires to balance socket.

4.19 4.15 4.18V

4.15 4.19 4.18V

This diagram shows the
correct way to connect
your battery to check
the voltage.

Battery
Pack

B A T T / P R O G R A M
B A T T M E T E R

START
ENT ER

4 . 2 0 4 . 1 9 4 . 1 9 V
4 . 1 8 4 . 1 8 4 . 1 9 V

IN C

M A I N 2 5 . 1 3 V
H 4 . 2 0 0 V L 4 . 1 8 2 V

· 18

Press the START/ENTER to enter the Lithium
Battery Meter program.

The screen indicate each cell's voltage.

The screen indicate the total voltage, the highest
voltage and the lowest voltage.

B6AC+ V2

BATTERY RESISTANCE METER

The user can check battery's total resistance, the highest resistance, the lowest
resistance and each cell's resistance.
Please connect the battery to the charger main battery lead to battery socket and balance
wires to balance socket.

00 5 00 3 00 3 mΩ

00 5 mΩ

This diagram shows the
correct way to connect
your battery to check
the resistance.

Battery
Pack

B A T T / P R O G R A M
B A T T R E S I S T A N C E

Sta rt
Ent er

0 1 2 0 0 5 0 0 5 mΩ

0 0 6 mΩ

IN C

T AT A L : 2 8 mΩ

H : 12 mΩ L : 5 mΩ

B6AC+ V2

Press the START/ENTER to enter the Lithium
Battery Resistance program.

The screen indicate each cell's resistance.

The screen indicate the total resistance, the highest
resistance and the lowest resistance.

19 ·

WARNING AND ERROR MESSAGE

In case of an error the screen will display the cause of error and emit an audible sound.

Incorrect polarity connected.

The battery is interrupted.

C O N N E C T E R R O R
C H E C K M A I N P O R T

B A L A N C E C O N N E C T
E R R O R

D C I N T O O L O W

D C I N T O O H I G H

C E L L E R R O R
L O W V O L T A G E

C E L L E R R O R
H I G H V O L T A G E

C E L L E R R O R
V O L T A G E - I N V A L I D

C E L L N U M B E R
I N C O R R E C T

I N T . T E M P . T O O H I

E X T . T E M P . T O O H I

O V E R C H A R G E
C A P A C I T Y L I M I T

O V E R T I M E L I M I T

The battery connection is wrong.

The balance connect is wrong.

Input voltage less than 11V.

Input voltage higher than 18V.

Voltage of one cell in the battery pack is too low.

Voltage of one cell in the battery pack is too high.

Voltage of one cell in the battery pack is invalid.

The cell number is wrong.

The internal temperature of the unit goes too high.

The external temperature of the battery goes too high.

The battery capacity is more than the maximum capacity
which the user sets.

The charging time is longer than the maximum charging
time which the user sets.

B A T T E R Y W A S F U L L

· 20

The battery voltage is higher than the maximum voltage
which the user sets when charging in balance mode.

B6AC+ V2

USING THE CHARGE CONTROL SOFTWARE
“CHARGE MASTER”

The free “Charge Master” software gives you unparalleled ability to operate the charger
through the computer. You can monitor pack voltage, cell voltage and other data during
the charging, view charge date in real-time graphs. And you can initiate, control charging
and update firmware from “Charge Master”.
In order to connect the charger to the computer and use the “Charge Master”, you are
required to use a USB cable which is not included in this package. The cable must be
terminated on one end with “A” plug and the opposite end is terminated with “micro-B”
plug which can connect to charger directly.
The “Charge Master” can be download from www.skyrc.com.

THE SET CONTAINS

1. SKYRC iMAX B6AC+ V2 Charger

2. Power Cord

3. T Plug with Banana Connector Charging Cable

4. DC Cable with Banana Connector Charging Cable

5. T Plug with Alligator Clip Connector Charging Cable

6. T Plug with Futaba Connector Charging Cable

7. T Plug with JST Connector Charging Cable

8. T Plug with XT60 Connector Charging Cable

9. Battery Clamps

B6AC+ V2

2

1

3

4

5

7

6

9

8

21 ·

SPECIFICATION

DC Input Voltage : 11-18V
Display Type: 2x16 LCD Display Backlight: Blue
Case Material: Metal Controls: Four Buttons
Case Size: 135x144x36mm Weight: 632g
PC Communications: USB Port for PC Control & Firmware Upgrade
External Port: 2-6S Balance Socket-XH, Temperature Probe Socket,
Battery Socket, DC Input, Micro USB Port for PC.
Delta Peak Detection for NiMH/NiCd: 5-15mV/cell / Default: 4mV/cell
Charge Cutoff Temperature: 20ºC/68ºF-80ºC/176ºF(adjustable)
Charge Voltage: NiMH/NiCd: Delta peak detection
LiPo: 4.18-4.25V/cell
LiIon: 4.08-4.2V/cell
LiFe: 3.58-3.7V/cell
Balance Current: 200mA/cell
Reading Voltage Range: 0.1-25.8V/cell
Battery Types/Cells: LiPo/LiIon/LiFe: 1-6cells
NiMH/NiCd: 1-15cells
Pb: 2-20V
Battery Capacity Range: NiMH/NiCd: 100-50000mAh
LiPo/LiIon/LiFe: 100-50000mAh
Pb: 100-50000mAh
Charge Current: 0.1A-6.0A
Safety Timer: 1-720minutes off
Charge Wattage: 50W
Discharge Current: 0.1A-2.0A
Discharge Cut-off Voltage: NiMH/NiCd: 0.1-1.1V/cell
LiPo: 3.0-3.3V/cell LiIon: 2.9—3.2V/cell
LiFe: 2.6-2.9V/cell Pb: 1.8V
Discharge Wattage: 5W
Balance Cells: 2-6 cells
Memory: 10 different charge/discharge profiles
Charge Method: CC/CV for lithium types and lead (Pb) batteries
Delta-peak Sensitivity for NiMH/NiCd.

AC Input Voltage: 100-240V

· 22

B6AC+ V2

CONFORMITY DECLARATION

SKYRC B6AC+ V2 satisfy all relevant and mandatory CE directives and FCC Part 15
Subpart B: 2010.

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

EN 55014-1:2006+
A1:2009+A2:2011

EN 55014-2:1997+
A1:2001+A2:2008

EN 61000-3-2:2006+
A1:2009+A2:2009

EN 61000-3-3:2008

EN 60335-1:2012

EN 60335-2-29:2004
+A2:2010

EN 55014-1: Electromagnetic Compatibility ­Requirements for household appliances, electric tools
and similar apparatus -a Part 1: Emission

EN 55014-2: Electromagnetic Compatibility ­Requirements for household appliances, electric tools
and similar apparaturs - Part 2: Immunity product family
standard

EN 61000-3-2: Electromagnetic Compatibility (EMS)
Part 3-2: Limits for harmonic current
emissions(Equipment input current up to and including
16A per phase)

EN 61000-3-3: Electromagnetic Compatibility (EMS)
Part 3-3: Limitation of voltage supply systems for
equipment with rated current≤16A

Part 1: General requirements

Part 2-29: Particular requirements for battery chargers
Measurement methods for electromagnetic fields of
household appliances and similar apparatus with regard
to human exposure

This symbol means that you must dispose of electrical from the General 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.

B6AC+ V2

23 ·

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 this point. 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 the battery enters the deep discharge zone. Individual cells within the pack may
become reverse polarized in this condition, and this can cause permanent damage.

A, mA: unit of measurement relating to charge or discharge current.1000 mA = 1 A
(A=Ampere,mA=Milliampere)

Ah, mAh: unit of measurement for the capacity of a battery (Amperes x time unit; h = hour).
If a pack is charged for one hour at a current of 2 A, it has been fed 2 Ah of energy. It
receives the same 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).

Nominal voltage(V): The nominal voltage of the battery pack can be determined as follows;

-.NiCd or NiMH: multiply the total number of cells in the pack by 1.2. A 8-cell pack will have a
nominal voltage of 9.6 volts (8x1.2).

-.LiPo: multiply the total number of cells in the pack by 3.7. A 3-cell LiPo wired in series will
have a nominal voltage of 11.1 volts (3x3.7).

-.LiIo: multiply the total number of cells in the pack by 3.6. A 2-cell LiIo wired in series will have
a nominal voltage of 7.2 volts (2x3.6).

-.LiFe: multiply the total number of cells in the pack by 3.3. A 4-cell LiIo wired in series will have
a nominal voltage of 13.2 volts (4x3.3).
If the nominal voltage of the battery is not printed on the battery's label, consult your battery
manufacturer or supplier. Do not guess the rated voltage of battery.

· 24

B6AC+ V2

WARRANTY AND SERVICE

Liability exclusion

This charger is designed and approved exclusively for use with the types of battery stated
in this Instruction Manual. SkyRC accepts no liability of any kind if the charger is used for
any purpose other than that stated.
We are unable to ensure that you follow the instructions supplied with the charger, and
we have no control over the methods you employ for using, operating and maintaining the
device. For this reason we are obliged to deny all liability for loss, damage or costs which
are incurred due to the incompetent or incorrect use and operation of our products, or
which are connected with such operation in any way.Unless 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.

Warranty and service

THIS WARRANTY IS ONLY VALID IN THE COUNTRY OF PURCHASE AND
THROUGH FORMAL DISTRIBUTOR.

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 are present at the time of purchase. During that period, we will
repair or replace free of service charge for products deemed defective due to those
causes.

For any repair or replace service, please contact your dealer in the first instance, who is
responsible for processing guarantee claims. This warranty is not valid for any 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.

B6AC+ V2

25 ·

Manufactured by

SKYRC TECHNOLOGY CO., LTD.

www.skyrc.com

All specifications and figures are subject to change without notice.
Printed in China 2014.04

7504-0475-01