Enerdrive ePOWER Charger EN31220, Owner'S Manual

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5. UNIT OPERATION
Understanding The Charging Mechanism
• The ePOWER 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 first when connected to a single battery
bank.
• At start, if the charger senses Bank 2 and 3 has battery voltage above
12V, the charger will then concentrate on fully charging Bank 1 first
until it reaches float 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 float stage. After, it will then concentrate on
recharging Bank 2 and 3 to float stage.
• Once all three banks have reached the float stage, the charger will
adjust the charger voltage to the preset float voltage and all three
banks will be connected in parallel with a diode for bank separation.
• In float stage, see the below chart for the maximum allowable
current draw:
Model EN31220 EN31240 EN31260 EN32430
Maximum Float Current 20A 40A 60A 30A
For Charging GEL, AGM And Flooded Batteries
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).
Each battery bank can have its own maximum charging current and
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