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4V, 0.5A BATTERY CHARGER

Prashant Mourya

Nov 26, 2016
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Nov 26, 2016
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I am making charger for Lead Acid rechargeable battery (4V, 0.5A).
what voltage and current is required at the output of charger ?
 

duke37

Jan 9, 2011
5,364
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Jan 9, 2011
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4V is very unusual. Does it have two cells?
A 12V car battery is charged to the top 14.4V so 2.4V per cell.
2.3V per cell will do for maintaining a reserve battery which is not normally discharged.
Voltage regulator chips often have a 1A current limit.
 
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