Charge Lithium Batteries - GRAUPNER SJ MULTILADER 9E Instructions D'utilisation

and the charge program must be set up correctly in terms of final charge voltage
and capacity for the battery type in use. The charge process is fundamentally
different to that required for Ni-Cd or Ni-MH batteries, and is termed a constant
current / constant voltage method. The charge current required varies according to
the battery capacity, and is set automatically by the charger. Lithium batteries are
usually charged at the 1C rate (1C charge rate = half capacity as charge current.
Example: battery capacity 1500 mAh: 1C charge current = 1500 mA = 1.5 A).
Because some types can be charged with upt to 2C or 4C charging current, the charging current and
the capacity of the battery must be set seperately. When the battery on charge reaches the specific final
voltage which is appropriate to the battery type, the charger automatically reduces the charge current in
order to prevent the battery exceeding the final permissible voltage. If the battery manufacturer states a
charge current lower than the 1C rate, then the capacity (charge current) must be reduced accordingly.
For a optimally charge the balancer connector must be connected to the Multilader 9E.
Problems caused by mistreating batteries:
It is very dangerous to overcharge Lithium-Ion batteries, as they tend to react by gassing, overheating
and even exploding. If the final charge voltage of 3.6 V / cell (LiFePO
and Lithium-Manganese) is exceeded by more than 1%, the lithium ions in the cell start to change into
metallic lithium. This material reacts very violently with the water in the electrolyte, and this can result
in the cell exploding. On the other hand it is also important to avoid terminating the charge process
before the final charge voltage is reached, since this reduces the effective capacity of the Lithium-Ion
cell markedly. Stopping the charge at just 0.1 V under the threshold means a capacity loss of around
7%. Lithium batteries must not be deep-discharged, as this leads to a rapid loss of capacity. This effect
is irreversible; it is absolutely vital to avoid discharging the batteries to below 2.5 V / cell.
Before connecting a battery to LiXX OUTPUT 1 or OUTPUT 2, the appropriate charging mode must
be selected - LiFe or LiPo.
If LiPo is selected, the LiPo LED is red. Pressing the LiPo / LiFe LiFe button is switched to the LiFe
mode, the LED goes out. Press again to go back to LiPo mode.
WARNING: the cell type, cell capacity and cell count set on the charger must always be
correct for the battery to be charged; if you make a mistake, the battery could explode
and burn! Never connect a Lithium-based battery to the charger if it features an integral charge
circuit! Always place your Lithium batteries on a non-flammable surface for charging.
4S
3S
2S
1S
GND
black
5. Unplug the battery from the charger, then the balancer connector.
6. If you do not want to charge any other batteries, turn off the charger by the power switch and dis-
connect from the power supply.
Note: You may use the OUTPUTS 1 and 2 simultanously, also you may charge different types of bat-
teries
(LiPo / LiFe).
Operating Manual Multilader 9E

Charge Lithium batteries

1. Plug the balancer connector of the battery to be charged into OUTPUT 1 or 2.
The negative terminal of the balancer connector of the battery must be connec-
ted be to the negative terminal on the charger (bottom) - that is to be plugged in
always flush with the bottom edge. By connecting the balancer, the individual
cells are matched automatically.
2. Plug the battery to an appropriate charging wire, note the polarity: red (+) and
black (-).
3. The charging process starts, the charging LED (Charging / Full) is red.
4. If the battery is fully charged, the charging LED will turn green.
current
) or 4.2 V / cell (Lithium-Polymer
4
voltage
charge time
25