New Battery Cells Or Cells Unused For A Longer Period - TESTBOY TV 465 PRO Bedienungsanleitung

®
Testboy TV 465
o

New battery cells or cells unused for a longer period

Unpredictable chemical processes can occur during the charging of new battery cells or
cells that have been left unused for a longer period (more than 3 months). Ni-MH and Ni-
Cd cells can be subjected to these chemical effects (sometimes called the memory effect).
As a result the instrument operation time can be significantly reduced during the initial
charging/discharging cycles of the batteries.
In this situation, Testboy recommend the following procedure to improve the battery
lifetime:
Procedure

Completely charge the battery.

Completely discharge the battery.

Repeat the charge / discharge cycle
at least 2-4 times.
Note:

The charger in the instrument is a pack cell charger. This means that the battery
cells are connected in series during the charging. The battery cells have to be
equivalent (same charge condition, same type and age).

One different battery cell can cause an improper charging and incorrect discharging
during normal usage of the entire battery pack (it results in heating of the battery
pack, significantly decreased operation time, reversed polarity of defective cell,...).

If no improvement is achieved after several charge / discharge cycles, then each
battery cell should be checked (by comparing battery voltages, testing them in a cell
charger, etc). It is very likely that only some of the battery cells are deteriorated.

The effects described above should not be confused with the normal decrease of
battery capacity over time. Battery also loses some capacity when it is repeatedly
charged / discharged. Actual decreasing of capacity, versus number of charging
cycles, depends on battery type. This information is provided in the technical
specification from battery manufacturer.
Notes
At least 14h with the in-built charger.
This can be performed by using the
instrument normally until the instrument is
fully discharged.
Four cycles are recommended in order to
restore the batteries to their normal capacity.
72
General description