VOLTCRAFT V-CHARGE 100 DUO, Operating Instructions Manual

Page: 86 / 236

86
Important!
Only a battery pack with exactly the same voltage for each cell provides the maximum
performance and service life for a model airplane/vehicle.
Variations in the quality of the materials used and the internal structure of multiple-cell
lithium battery packs mean that the cells may have different voltages once discharged.
Charging such a rechargeable lithium battery without balancer will quickly cause large
differences of cell voltage. This not only shortens the operating life (as one cell may
have a very low voltage), but also damages the rechargeable battery as a result of a
total discharge.
When charging a rechargeable lithium battery with different cell voltages without a
balancer, there is the risk of overcharging one cell.
Example:
A dual-cell LiPo battery pack charged without the use of a balancer appears to have a voltage
of 8.4 V and thus appears to be fully charged. The individual cells, however, have a voltage of
4.5 V and 3.9 V (one cell is dangerously overcharged, the other half discharged).
A cell overcharged in this way may leak, expand or, in a worst case scenario, catch fire or
explode!
When this LiPo rechargeable battery is, e.g., used in a model airplane, the flight time will be very
short because the voltage of the half-discharged cell will break down quickly and the recharge-
able battery will stop supplying power.
If your lithium rechargeable battery has a balancer connection, it must always be
connected to the charger via the enclosed XH adapter in addition to the two regular re-
chargeable battery connections (plus/+ and minus/-); always use the charge program
"BALANCE" then, rather than the charge program "CHARGE".
If the balancer plug of the rechargeable battery does not match the shape of the
socket on the XH adapter (it is intended for XH plugs), you need to use a suitable
connection cable. It is available in accessory trade.