Automatic Recognition Of The End Of Charging - Medion MD 11954 Manual

Automatic Recognition of the End of
Charging
This charging device manages the charging time for NiCd and
NiMH type rechargeable batteries separately. This
management is based on the (Minus Delta U) process.
Recognition of the end of charging in accordance
with Minus Delta U (-Δ U)
Differences are described with delta in mathematics. In this
case, Minus Delta U means a negative difference in voltage.
This recognition of the end of charging exploits the following
effects:
The voltage of a battery will increase continuously if it is
being charged with constant electricity. However, if a battery
has been completely charged, its voltage will have reached a
maximum and will decline slightly if there is a further current
flow. This slight decline in voltage will be recognised by the
charging technology and charge will be ended.
NOTE:
The charging time for 9 V block batteries is not
recognised automatically and ends after 10 hours.
You will also be able to establish the charging time
for a 9 V block batteries as follows:
Charging time = (capacity of battery (mAh) / charging
electricity (mA)) x 1.5
10