INSTRUCTION MANUAL
The charger includes an integral
balancer and a large LCD screen for
displaying current, voltage capacity and
charging time. The charger detects the
cell count, and therefore sets the correct
charge cut-off voltage automatically.
The charge current varies within the
range of 100 to 3500 mA.
The recommended charge rate is 1C
(battery capacity = charge current)
1C means: capacity value = charge
current.
*Example: LiPo cell of 2200 mAh
capacity; 1C = 2200 mA (= 2.2 A) charge
current
First locate the power leads on the left-
hand side of the charger, and connect it
to a 12 V lead-acid car battery or 12 V DC
mains PSU (red = positive / black
=negative). The charger is now ready to
use. The device is protected against
incorrect polarity, but you should still
make every effort to avoid this error.
The Lithium battery is connected to the
battery sockets on the right-hand side of
the case using a charge lead terminated
in banana plugs. When connecting the
pack take care to maintain correct
polarity (red = + terminal / black = -
terminal).
The charge output is protected against
reverse polarity and short-circuit, but it is
always best to avoid these errors, and to
correct them immediately if they do occur.
Push battery type button to select the
battery type matching with the datasheet of
the battery manufacturer. It's very
important to select the correct battery
type. Failure to do this may damage the
battery or at worst it can cause fire.
Max. Charge
Volt.
3.7V/cell
4.2V/cell
3.6V/cell
4.1V/cell
3.3V/cell
3.6V/cell
Battery Type Voltage Level
LiFe
LiIon
LiPo
Balancer LEDs
Universal Balance Port
(Pitch Size=2.54mm)
Battery Sockets
Battery Type Button
Start/Stop Button
2. The Charger's Illustration
Thank you for your choice of the iMAX
C403, 12 V fast charger from the SkyRC
range. The unit is simple to use, but its
operation does require some knowledge
on the part of the user. These instruction
manual is designed to ensure that you
quickly become familiar with the charger's
features and how to operate it in the
proper way.
The correct charge current must be set
before you initiate the charge process.
This is carried out by rotating the adjuster
knob on the front panel to set the charge
current to suit the battery (100
…
3500
mA). Usually we are using
“
1C
”
to
charge the battery.
The iMAX C403 is a low-cost, high-
quality 12 V DC fast charger with a metal
case, designed for charging Lithium
batteries of up to 4 cells. It can charge
three kinds of Lithium batteries: Lithium
Polymer, Lithium ion and LiFePo4(a123).
LCD Screen
1. General Description
3. How to Connect the Battery
4. Selecting the Battery Type
5. Selecting the Charge Current
6.The Charge Procedures
This is the correct charge current for the
most popular types of Lithium batteries.
Naturally, the charger can cope with
packs of higher capacity, but the charge
time is proportionately longer. Certain
high-performance Lithium batteries can
be charged at rates higher than 1C.
Please read and observe the datasheet
provided by the battery manufacturer.
Connect the Lithium battery to the
charger by plugging the voltage balance
lead into the balance port. When making
this connection take care to position it
correctly and maintain correct polarity;
the black wire of the balance lead must
line up with the negative mark on the
charger case.
Locate the main power wires attached to
the battery and connect them to the
charger
’
s charge sockets.
Current Knob
11-15V
Power Lead
1
2
