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If you have a 123 Watt 7 amp solar panel working on charging a 12 volt 225 amp hour gel battery how long will it take the solar panel to charge the gel batter?
Wiki User
∙ 14y ago
You need to provide many more details.
So assuming that the panel voltage is reasonable, the panel is clean, it is sunny and the panel is pointed at the sun. Then it will take about 225/7 hours to charge the battery. About 300 hrs.
But in fact charging is only about 85% efficient (charge at 14 V get energy out at 12V or so).
This ups the charge time to maybe 350 hrs or so.
Charging can be improved by inserting a MPPT charger between the battery and the panel. This bit of electronics decouples the battery voltage and the panel voltage allowing the panel to be operated at its' most efficient voltage.
That might knock off 15% of charge time bringing you back to 300 sunny hours.
Wiki User
∙ 14y ago
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How do you set the charging rate on your car?
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Do you add water to a forklift battery before or after charging?
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How do you reset cadillac battery not charging light?
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Why doesnt your laptop want to charge it worked for a couple days and all of a sudden it stopped working Also whenever its out of battery a small battery light blinks it doesnt do that no more help?
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Condition of checking the charging condition of a battery?
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Battery won't charge?
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