☀ ALLPOWERS Car battery maintainer can charge 12V batteries with the power of the sun and create 10 watts of energy, output current of 550mAh
☀ Mono-crystalline silicon panel works in all daylight conditions and is weatherproof（some rain drop is OK, but not completely rainproof）for added durability
☀ Environmental protection and energy saving, which can extend the battery lifetime. Perfect solution for charging the batteries of motorcycles, automobiles, snowmobiles, tractors etc
☀ Built-in blocking diode to prevent reverse discharge
☀ Extends battery life by keeping it in a good state of charge, connects to the battery through the cigarette lighter socket or alligator clip.