Correct charging of a VRLA battery is essential
in optimizing battery performance and life. Although
a constant voltage charge should be applied, optimum
charging also depends on temperature (Nominally
20 degree), charge current (max 1/4 battery capacity)
and ripple current (minimum) . Two basic categories
of charging exist.
To find the size of battery you require you generally
need two pieces of information, battery load and
back-up times. (Note: other factors may also have
This charging method is used in applications such
as emergency back-up when the battery is required
only upon mains failure e.g., continuously on
charge and consequently the recommended voltages
are slightly lower than cyclic charging so as
not to damage the battery.
Cyclic charging is used in applications where
the battery is repeatedly discharged then charged,
e.g. Portable equipment, Wheel Chairs, Golf trolleys
A higher charging voltage is used but should NEVER
be left on indefinitely since is will overcharge
and destroy the battery.
Note: For optimum performance always
recharge a battery immediately after discharging.
Consult the individual battery specification for
the correct charging voltage or contact CCB Technical