This solar charger kit can maintain batteries that are linked in series or parallel even when connected to a power inverter. If two batteries are connected to the panel, the power produced by the solar panel will charge the first battery(the second battery is linked to the first by cables) until completely charged. Once the first battery is charged fully, the second battery will receive the charge from the solar panel. This solar panel produces 7 watts per hour in ideal conditions(placed in direct sunlight, not cloudy). The batteries' charge will drop accordingly if the items powered off the inverter draw more than 7 amps.
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