User Manual

41
• When a charge is initiated the voltage of the battery bank rises very quickly
and the charger goes quickly into the Absorption charge cycle or shuts off
charge to the batteries completely.
1. This is often an indication of sulfated batteries which may be causing
alower than normal impedance in reference to the charger. Capacity of
the bank will be reduced and may be confirmed by running a load test.
2. An increase in Absorption time may be necessary to de-sulfate the
battery bank.
3. If the battery bank is heavily sulfated, a corrective equalization may be
necessary. Perform a corrective equalization if specific gravity readings
vary by more than .030 between cells.
• Charging current to the battery bank (Amp output) is low.
• Charging current will decrease as the batteries become fully charged. If
charge current is low they may have reached the end of the charge cycle.
Verify that the charger is nearing the end of Absorption time or in Float
voltage phase. Low current is normal this stage of charging.
• The battery bank self-regulates charge current. Voltage settings may
be forced (too high/low), however amp output to the battery bank cannot
be forced and will drop as the batteries reach a full state of charge.
When the charge current reaches 2-3% of the capacity of a healthy
battery bank the charge is essentially complete. (ex. 500 AH battery
bank. Charge current is reduced to 10-15 Amps)
• Check your Specific Gravity
1. If specific gravity readings are at 1.250 or greater, the batteries
are in the Absorption charge phase.
2. If the specific gravity is lower than 1.250 following a charge,
perform a load test to ensure all cells are operating correctly.