Dynamis lead-line Technisches Handbuch - Seite 9
Blättern Sie online oder laden Sie pdf Technisches Handbuch für Kamera-Zubehör Dynamis lead-line herunter. Dynamis lead-line 16 Seiten. Sealed lead acid batteries
Seite druckeninduces low float current and minimum grid corrosion, which are the
requirements for long battery's float service life. Such charging mode, which
is called floating charge, allows batteries to be continuously overcharged all
the year round in order to provide full and stable capacity.
The float charge voltage is 2.25~2.3V/cell at 25°C. However, when the
ambient temperature is too high or too low, the above voltage setting may
induce either too high side reaction rates or not enough charge. Therefore,
the float voltage is suggested to change with temperature, and the
compensation coefficient is -3.0mV/°C/cell, or as the following table:
4.3 Charging methods for cyclic use batteries
The cycle life of batteries is influenced by the following factors: the
charging mode, the battery's temperature, the battery's charging frequency,
and the depth of discharge. Proper charging mode is the most important
factor affecting battery's cycle life.
The charging voltage for the valve regulated lead acid battery should not be
larger than the gassing voltage, i.e., 2.4~2.5V/cell. The gassing voltage
varies with temperature, and is decreased as the temperature is increased. Its
temperature coefficient is -5.0mV/°C /cell, or as the following table:
The most effective charging method for VRLA battery is the constant
voltage (CV) charging mode. For the fully discharged (100%DOD) battery,
for example, it may be charged at 2.4 ~ 2.5V/cell, with the highest possible
current limit, in about 16 hours. For the 50% discharged battery, it may be
charged in 8 to 10 hours using a CV of 2.4 ~ 2.5V/cell.
The popular charging method for VRLA battery is the constant current/
constant voltage (CICV) charging mode. In the first stage, the constant
current (0.1C~0.3C) charging is performed before reaching the voltage limit.
DYNAMIS Batterien GmbH
Tel. +49 7735 93669-0
Brühlstr. 15 D-78465 Dettingen / Konstanz
Fax +49 7735 93669-91
www.dynamis-batterien.de
04.12.2006
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