VOLTCRAFT B6, Operating Instructions Manual

Page: 63 / 172

63
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 or, in a worst case scenario, catch fire or explode!
If your LiPo battery pack has a balancer connection, the charging program „BALANCE“ should always be
used.
If your LiFe or LiIon rechargeable battery also has a balancer connection, the above information applies
analogously, only the voltage values differ, see chapter 7.
d) Fast Charge („FAST CHG“)
When charging a lithium rechargeable battery, the charging current reduces continually due to the charging method
used, the fuller the rechargeable battery becomes (when the rechargeable battery has reached its maximum char-
ging current and the charger switches from continuous current to continuous voltage charging). This will, of course,
also extend the charging time.
At quick charging, the continuous voltage charging method uses a higher charging current. However, this reduces
the capacity, because the charge process is terminated earlier due to the safety cut-off in the charger.
This means, a LiPo battery, for example, cannot be fully charged using the fast charge function. Only approx. 90%
of the capacity achievable with the normal charge process is available.
Therefore, fast charging is only wise if the battery has to be used again as quickly as possible.
The procedure when setting the charging current and voltage/cell number must be performed as for the rechargeab-
le battery programme „CHARGE“; see chapter 11. b).
e) Storing Batteries („STORAGE“)
This rechargeable battery programme can be used if you want to store the rechargeable battery for an extended
period. Depending on the rechargeable battery type set, the rechargeable battery is charged or discharged to a
specific voltage (LiPo = 3.85 V, LiIon = 3.75 V, LiFe = 3.3 V, voltage per cell in each case).
Depending on the cell voltage, the battery is either charged or discharged. Of course, with a multi-cell battery
pack, this is only wise if a balancer connection is available and connected to the charger.
At extended storage of a lithium rechargeable battery (e.g. when storing a flight battery over winter), the re -
chargeable battery should in any case be checked every 3 months and treated with the rechargeable battery
programme „STORAGE“ again to prevent harmful deep discharge.
The procedure when setting the charging current and voltage/cell number must be performed as for the rechargeab-
le battery programme „CHARGE“; see chapter 11. b).
The set current is used for charging/discharging.