Voltage
Current
(AMPS)
1.Desulphation 2.Soft start
3.Bulk charge 4.Absortion
5.Battery test
6.Recondition
7.Float
Absorption charging (constant voltage)
The charge rate slows down so the battery can absorb more power and reach 100% charge. The voltage
remains at a constant 14.4V for 12V charger or 28.8V for 24V charge while the current is gradually reduced
until no more power can be added without over-charging the battery.
Battery Test
An automatic battery test is conducted immediately after the absorption stage. The test monitors the
voltage for 90 seconds to determine if the charge was successful.
12V charger: if the voltage is below 13.2V (fail), the charger will initiate the recondition stage.
12V charger: if the voltage is above 13.2V (pass), the charger will proceed to the final stage, float
charging.
24V charger: if the voltage is below 26.4V (fail), the charger will initiate the recondition stage.
24V charger: if the voltage is above 26.4volts (pass), the charger will proceed to the final stage, float
charging.
Recondition
The battery reconditioning function is initiated automatically in the case that the battery fails the battery
test (stage 5). Failing the battery test indicates that the absorption stage was unable to fully charge the
battery .The recondition mode will then begin to introduce a low constant current for a period of 4 hours.
Then the charger will go into float charging mode.
This recondition stage can recover batteries from a deeply discharged state increasing performance and
battery life.
This mode is used to recover deep discharged flooded batteries where you could expect a stratified acid
(high acid weight in the bottom, low on top). Check with battery manufacturer when in doubt. Use this
mode with care, because the high voltage will cause some water loss. 16V/32V is normally no problem
for electronics in 12V/24V system. Consult electronic equipment manufacturer when in doubt. Light bulbs
life will be reduced at higher voltage. Try to disconnect light from the battery during this phase. Maximum
effect and minimum risk for electronics is achieved by charging a disconnected battery.
Float charging
The Float stage maintains the battery at 100% charge without overcharging or damaging the battery .This
means the charger can be left connected to the battery indefinitely.
The battery charger has an 7-step fully automatic charging cycle. The cycle is repeated infinitely. If the
terminal voltage drops below a lower limit, the charger automatically goes back to the beginning of the
charging curve.