Harbor Freight had a special on solar panel kits with NO battery charger circuit. I think the factory battery chargers was bad so customers returned the panels for a refund. These are sold as 45 watt kits. I bought 9 solar panels with no battery charger circuit.
I would like to connect all 9 panels together to charge a car battery. Then I can use a DC/AC inverter to take power from the battery. My meter shows no load voltage on the panels is 18.5 vdc and 14 vdc when connected to a car battery. 9 panels in parallel will give be 135 watts this should charge a 1000 amp battery no trouble at all with 14 hours of sun every day.
I need a circuit that will charge the battery then stop charging when the battery is fully charged. I have no clue how this is done? This is the only ideas I have?
**broken link removed**?
I would like to connect all 9 panels together to charge a car battery. Then I can use a DC/AC inverter to take power from the battery. My meter shows no load voltage on the panels is 18.5 vdc and 14 vdc when connected to a car battery. 9 panels in parallel will give be 135 watts this should charge a 1000 amp battery no trouble at all with 14 hours of sun every day.
I need a circuit that will charge the battery then stop charging when the battery is fully charged. I have no clue how this is done? This is the only ideas I have?
**broken link removed**?
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