APPENDIX D BATTERY CHARGING REFERENCE
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Battery Charging Times
Charging time depends on the capacity of your battery bank and on how
deeply it is discharged. The following equation gives an approximate charging
time:
Charging Time = CAP x DOD
CC x 80
where:
Charging Time = Battery recharge time in hours
CAP = Battery capacity in amp hours
DOD = Battery depth of discharge in %. (A fully discharged battery has 100%
DOD.)
CC = Charge current, the current output of the charger in amps. (Charge
current depends on battery size and breaker size settings.)
Example
The battery bank is made up of two 8D Group size batteries with a rated
capacity of 200Ah each. The bank is 80% discharged (i.e. DOD = 80). The
approximate charging time with the inverter•charger will be:
400 x 80
= 4 hours
100 x 80
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