# How long do you have to charge the 12 volt battery for?

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How long to charge the 12volt battery pack, using a 45va step down from 240 uk to 110 volt

Posted on Jul 21, 2011

Hi,
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Goodluck!

Posted on Jan 02, 2017

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And the charger its very important because you can over charge the battery.An example,if you have a 12 Amps Batteries each one if you put it in series will be 24 Volts.at parallel conection will be 12 volts but the double of Amps.
At serial connection will be 12 Volts the amps will be the same but the volts will be 24.

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The charger at 24 Volts must be 26-28 Volts. to charge well.

The charger for 12 amps batt example must charge 2 amps per hour at 6 hours = 12 Amps.(2 Amps Charger by 6 Hours Charging= 12 Amps.(Fully Charged.
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• A 6 Volt charger will charge a 12 Volt battery, it will just take twice the time to get the 12 Volt battery to full charge as a 12 Volt charger would take. V*I=W. It will take up to 36 hours to get a full charge from near dead but it will work just fine.

• If you have any comments please feel free to leave them here.
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You should be able to get over 12 volts from the charging system of the lawnmower. I would think once it is running, you should get 12.8 to just over 13 volts dc to adequately charge your battery. If you have less then 12 v power output from your chargiing system, well then the charging system is not working properly.

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