![]() ![]() So to keep up a series pair of them (12 volts) just for maintenance or storage, you would want a panel that is around 4.2 watts. A rough rule is that if the panel puts out about 2 watts or less for each 50 battery amp-hours, then you don't need one.įor example, a standard flooded golf car battery is around 210 amp-hours. ![]() Generally, there is no need for a charge controller with the small maintenance, or trickle charge panels, such as the 1 to 5-watt panels. ![]() Most batteries need around 14 to 14.5 volts to get fully charged. Most "12 volt" panels put out about 16 to 20 volts, so if there is no regulation the batteries will be damaged from overcharging. It regulates the voltage and current coming from the solar panels going to the battery. What is a Solar Charge Controller?Ī charge controller or charge regulator is basically a voltage and/or current regulator to keep batteries from overcharging. Shop our selection of Solar Charge Controllers here. Pump Installation Equipment & Accessories.Solar Pump Installation Equipment & Accessories.Solar Pump Controllers & Current Boosters.
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