? size solar panel
Folks: We would like to use a 12v deep cycle battery for topping off our 2 laptops, 2 kindles and cell phones. What size solar panel would be needed to keep the 12v battery charged/topped off. ...
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I wouldn't even consider anything less than 250 watts. Unless you live on the east side of the perpetual overcast 250 watts will end up being taxed.
Why so big? AGM cannot be used and flooded batteries must be charged to 100% more often than occasionally if you want them to live.
Use direct DC to DC converters for this purpose. Laptops, ebooks, cellphones, everything.
This isn't something that additions and subtractions work well at. Batteries are fussy -- like Koala bears -- about their diet. Mistreat them and they die. It's a chemical not an electrical thing.
Lithium would be ideal. So would an Aston Martin be giving the battery a ride home. Oregon in Winter solstice is not a solar powerhouse. Keep it in mind.
Why so big? AGM cannot be used and flooded batteries must be charged to 100% more often than occasionally if you want them to live.
Use direct DC to DC converters for this purpose. Laptops, ebooks, cellphones, everything.
This isn't something that additions and subtractions work well at. Batteries are fussy -- like Koala bears -- about their diet. Mistreat them and they die. It's a chemical not an electrical thing.
Lithium would be ideal. So would an Aston Martin be giving the battery a ride home. Oregon in Winter solstice is not a solar powerhouse. Keep it in mind.
