Battery Charge Cycle Parameters
battery charge cycle changes with the parameters:
Charge with constant current without voltage control. Only applicable when charging
with small currents - otherwise battery damage may occur due to high temperature and
resulting water loss. At the end of the charge cycle the current is removed manually -
(turning the charger off). Due to the long charging period this method is only suitable
for first time installation of the battery.
This is a charge method identical to constant current without voltage control mentioned
above, the difference is the automatic stop at the end to the charge cycle. This is
usually at the end of a predetermined time period (timer).
Charge with constant voltage, when the voltage threshold is reached the current is
reduced automatically. This charging method reduces the charge cycle typically
between 7 - 9 hours.
This charge method starts with a constant current until the battery reaches the gassing
voltage, after which a transformation occurs and the charger continues its cycle with a
constant voltage instead. The constant voltage is maintained below the gassing threshold
(2.4V per cell). In this manner the current is drastically reduced so that overcharging
the battery never becomes a concern. The charging cycle depends on the beginning current
The charging cycle depends on the batteries internal resistance. In this method the
current is reduced and the voltage increases. After reaching the desired threshold the
charger is turned off (manually).
This charging method also utilizes the batteries internal resistance. The current is
reduced and voltage also increased until reaching the desired threshold. The charger is
turned off automatically (timer) usually between 10 - 12 hours.
The charge method allows the current to be constant until the gassing threshold of 2.4
V is reached. After which the method switches to constant voltage and a reduction of the
current. After reaching a specified level charging resumes with constant current until the
end of the cycle when the battery is replenished. At this point the charger turns itself