12v,7ah

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dhaval.fudnawala

New Member

• Jun 28, 2011

• #1

i have 12v,7ah lead-acid battery. i would like to charge it using solar panel. how much watt solar panel i need to charge this battery?

 

Last edited: Jun 28, 2011

Sceadwian

Banned

• Jun 28, 2011

• #2

Your question isn't that simple. Please look up lead acid battery charging considerations and solar cell output considerations.

 

ronv

Well-Known Member

Most Helpful Member

• Jun 28, 2011

• #3

You can charge at 10 to 25% of the AH rating. So .7 to 1.75 amps. I would shoot for the high side since solar panels give lower output most of the time. So a 15 to 25 watt panel.