Operation Manual

18
The capacity data given by the manufacturer is the maximum theoretic quantity of cur-
rent which can be delivered by the accumulator. That means that for example an accu-
mulator of 2000mAh can theoretically deliver a current of 1000mA (= 1 ampere) for two
hours. This value considerably depends on many factors (condition of the accumulator,
discharge current, temperature, etc.).
The term C-rate is very common for charging devices. The C-rate is the amount of
current usually indicated for the charging and discharging processes. This current
value given in ampere corresponds to the nominal capacity given in ampere-hours;
that means that 1C = 2.0A for an accumulator of 2000mAh.
Please note that the accumulator capacity which can be drawn mainly depends on the
discharge current: The lower the discharge current the higher the capacity that can be
drawn.
Nowadays, noted manufacturers indicate C/3 for the capacity of an accumulator. That
means that for example an accumulator of 2500mAh achieves these 2500mAh for a
discharge current of 850mA (= ca. C/3). But if a manufacturer indicates a discharge
current of C/10 (= 250mA) for an accumulator of 2500mAh you can take it for granted
that this accumulator cannot deliver 2500mAh for a discharge current of 850mA! The-
refore, the accumulator provided with the indication C/10 is the worse accumulator.
Accumulators discharge themselves in the course of time. This property is known as
self-discharge.
Properties
This is a charge set for nickel-cadmium and nickel-metal-hydride accumulators; it
charges in a rapid or accelerated manner.
The microcomputer-controlled charging process charges the accumulators to 100%.
100% means up to 115% of the capacity indicated for new accumulators and less
than 100% of the capacity indicated for older ones.
This charging set does not require a discharge before starting the recharge process.
Based on its current charge status the accumulator is recharged to its currently pos-
sible 100%.
The recharging cycle is controlled independently of the charge status of the accumu-
lator.
The charging set is provided with an automatic charge conservation.
The charging device has an automatic accumulator monitoring system. The automa-
tic accumulator detection registers if an accumulator is inserted or removed.