28th November 2019


How many amps do I need to charge a 12 volt battery?

e.g. 24 WATTS / 12 VOLTS = 2 AMPS CHARGER CURRENT REQUIRED = 26.4 AMPS + 2 AMPS = 28.4 AMPS. 8. Choose the next biggest charger in the range e.g. 12 VOLT, 30 AMP, 3 BATTERY BANKS = BCM 12/30-3 Note Much too big a charger could damage the battery and too small will take longer to re-charge.

Likewise, people ask, what is the charging rate for a car battery?

A basic charger usually charges at around 2 amps - and so needs 24 hours to deliver the 48 amps needed to fully charge a flat, 48 amp hour battery. But there is a wide range of chargers with different charge rates on the market - from 2 to 10 amps. The higher the charge output, the faster a flat battery is recharged.
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