ePOWER Battery Charger Manual

5. UNIT OPERATION
Understanding The Charging Mechanism
In oat stage, see the below chart for the maximum allowable current draw:
Model EN31220 EN31240 EN31260 EN32430
Maximum Float Current 20A 40A 40A 30A
EN312100
60A
For Charging GEL, AGM And Flooded Batteries
The battery charger is a three bank battery charger that is capable of charging a maximum of three
battery banks.
The charger is designed to have Bank 1 charge the main battery bank. Always use Bank 1 rst when
connected to a single battery bank.
At the start, if the charger senses Bank 2 and 3 has battery voltage above 12V, the charger will then
concentrate on fully charging Bank 1 rst or until it reaches oat stage. It will then switch to charge
Bank 2 and 3.
OR
At start, if the charger senses either Bank 2 or Bank 3 have voltage below 12V, it will cycle to charge
Bank 1 for 15 minutes then Bank 2 and 3 together for 15 minutes. When the charger senses both
Bank 2 and 3 reached 13V, it will then concentrate on charging Bank 1 until it reaches the oat stage.
After, it will then concentrate on recharging Bank 2 and 3 to oat stage.
Once all three banks have reached the oat stage, the charger will adjust the charger voltage to the
preset oat voltage and all three banks will be connected in parallel with a diode for bank separation.
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The charger can be set to Mode 2 - 2 stage charging (Bulk and Absorption stage charging only) or
Mode 3 – a 3 stage charging (Bulk, Absorption and Float stage charging).
Bank 1 can be set separately to Bank 2 & 3.
Page 24 Enerdrive Battery Charger Owners Manual Rev. 5.4