8
Using the charger for the first time
Using the charger for the first time
Fuse, 7.5 A / 32 V
Blue LED
Red LED
START/STOP button
INPUT 11-15V DC
OUTPUT 1-4 cells
Using the charger for the first time
Connect your Li-Po Charger 4 to a 12 V power
source of adequate capacity.
Check polarity carefully!
The ideal power source is a 12 V car battery or
other suitable lead-acid battery (Order No. 2593:
12 V / 24 Ah).
Alternatively a stabilised mains PSU with a rated
output of 12 - 14 V and at least 5 A can be used,
e.g. Order No. 6445 (13.8 V / 7 A) or Order No.
94450 (13.8 V / 5-7 A).
Stand-by mode
When you connect the Li-Po Charger 4 to the
power source, the blue LED starts flashing at
three-second intervals.
Caution: if you press the START/STOP button
while the charger is in charge mode, battery
charged mode or error mode, the Li-Po Charger
4 reverts to Stand-by mode.
Charge mode
Now connect a suitable genuine GRAUPNER
Lithium-Polymer battery pack to the output of
the Li-Po Charger 4. The pack must consist of
no more than four cells
If you are charging a Lithium-Polymer pack
consisting of one to three cells, press the
START/STOP button briefly after connecting the
battery to the charger.
You will hear a loud audible signal to confirm
that the button was pressed, and the blue LED
(for 1 - 3 cells) lights up; it continues to glow
during the charge process.
If you are charging a Lithium-Polymer pack
consisting of four cells, hold the START/STOP
button pressed in for about two seconds after
connecting the battery to the charger.
You will hear two short audible signals to con-
firm this. The red LED (for 4 cells) lights up; it
continues to glow during the charge process.
You can interrupt the charge process at any
time by pressing the START/STOP button. The
Li-Po Charger 4 then reverts immediately to
Stand-by mode.
The Li-Po Charger 4 has been developed to
provide as simple and safe a means of charging
sensitive Lithium-Polymer cells as possible.
During the entire charge process the special
Lithium charge program calculates the optimum
current for each phase of charging, with a
maximum current of 3 Amps.
The effect of this is that the Li-Po Charger
4 starts with a relatively low charge current,
then analyses the battery completely before
increasing the charge current fully automati-
cally. When the pack is approaching maximum
capacity, the charger reduces the charge current
again, also completely automatically.
