elv ALC 7000 Expert Bedienungsanleitung Seite 29

current) appears in the display together with the charge current value last
programmed for the channel .
- Adjustments to the setting are also made using the Cursor keys „←", "↑" and
"↓" and applied by the unit after pressing the „Input" key.
- Press the „Eingabe" (input) key again to activate the option to set the discharge
current.
- In addition to „Stromvorgabe" (set current) and the digit value, „Entladen"
(discharge) appears in the display.
- Set the digit value in the same way as for the charge current and press the
„Input" (input) key to complete the setting and conclude the input of battery
data.
7. Battery Service Program
Apart from automatic charging, the charging unit also provides functions for
discharging the battery and for discharging with subsequent recharging. These
options are particularly useful for NiCd batteries.
- The individual functions are selected by means of the „Funktion" (function)
key. The respective channel is selected using the „Kanal" (channel) key.
Handling NiCd batteries
NiCd batteries can be affected by the so called Memory Effect. This occurs
when the battery power is repeatedly not run down fully to its end cell
discharge voltage level and recharged again without it being subjected to a
discharge process beforehand. The cells „recognize" that they to not need
to provide full performance and, correspondingly, deliver increasingly less
power until, eventually, the relevant equipment fails to function at all. A typical
case of this is, for example, the battery of a cordless telephone when the
telephone is replaced on the base station charging unit after each call. Our
battery charging unit can prevent this effect by providing discharge options,
which can be used before the charging function (the functions „Discharge"
and „Discharge/Charge"). In individual cases, it is even possible to make
batteries, which have been damaged by incorrect charging, capable of being
used again by repeatedly discharging and correctly charging using the
charging unit.
These functions considerably increase the service life of batteries and ensure
their power performance is retained.
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