ALEKO LM118 24 Volt Charge Controller for 10 Amp Solar Panel LCD Display Overcharging Protection ALEKOs solar panel charge controller is a great tool to regulate the solar panel and battery pack attached to your gate opener The controller will automatically stop charging your battery when its full, preventing overcharging and energy waste LED indicator clearly displays when your battery is charging and when its fully charged Made for an ALEKO brand gate opener, but works with an ALEKO solar panel wherever you might need a charged battery Product specifications: 24VDC power, 10 amp maximum output