Dynamis lead-line Panduan Teknis - Halaman 13
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Halaman Cetak5. Maintenance of sealed lead acid batteries
5.1 The storage and maintenance of batteries
Storage temperature range: -30 °C ~ 50°C
humidity range: 25% - 85%
Fully charge the batteries before storage; if not, battery life will be shorter.
Use the batteries on a first-come basis, as batteries gradually deteriorate
even under proper storage conditions. Batteries stored for over long periods
may not restore to their initial capacity even after recharging.
Batteries under storage at ambient temperature of 25°C should be recharged
every six months to maintain their quality, performance and reliability. The
interval of this charge should be reduced to 50% by each 10°C rise in
temperature above 25°C.
Charge the batteries based on storage temperatures, as follows:
<20°C storage:
20°C ~ 30°C storage:
>30°C storage:
Recharge method: To charge with constant voltage of 2.4 ~2.5V/cell and
initial current of 0.4CA and total duration of 5 ~ 8 hours.
5.2 The detection and remedy of "defective" batteries
This paragraph will describe how to differentiate the defective batteries from
the restorable batteries when abnormal phenomena happen during the
early usage or warranty period.
Measuring the following parameters may disclose the battery's condition:
open circuit voltage, internal resistance, battery capacity and the charging
behavior. Using one parameter for criterion is better double-checked by
other parameters. The most commonly method is the measurement of open
circuit voltage.
The OCV of new batteries should be above 6.45V(for 6V battery) or
12.9V(for 12V battery). After transportation, storage and different discharge
factors, batteries' OCV will have values from 12.9V to even 0.0V. If the
battery's OCV is below 1.93Vpc, or 5.79V(for 6V battery), or 11.58V(for 12V battery),
this battery is a defective battery due to over-discharging or some kind of
deterioration. This kind of battery has permanent damage even after recharge.
DYNAMIS Batterien GmbH
Tel. +49 7735 93669-0
charge every 9 months
charge every 6 months
charge every 3 months
Brühlstr. 15 D-78465 Dettingen / Konstanz
Fax +49 7735 93669-91
www.dynamis-batterien.de
04.12.2006
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