POWOXI 3.3W-Solar-Battery-Trickle-Charger-Maintainer -12V Portable Waterproof Solar Panel Trickle Charging Kit for Car, Automotive, Motorcycle, Boat, Marine, RV, Trailer, Powersports, Snowmobile, etc.

Upgrade Intelligent Charge Controller: Built-in internal protection system and smart fast charging Cooperate with Quality solar silicon material ensures high conversion and stable output the solar panel's energy conversion efficiency to 25-30%. Smart Internal Protection System: From POWOXI technology Solar battery charger will not damage the battery and overcharge. The built-in smart protection system and blocking diode structure ensures no overvoltage and short circuit. Make charging safer. Stronger & More Long-lasting: The 3.3W solar car battery charger adopts high-transparency glass, which is high-strength, impact-resistant, wind-snow-resistant low-iron tempered. This waterproof solar battery charger needs no additional maintenance. Scratch Protection Design: The ABS+PC frame is stronger than flexible solar panels, so there's no need to worry about the solar panels bending. Aluminum alloy may damage the car paint, but with the ABS+PC frame, for durability this is not a concern. Easy to Install and Use: The solar battery maintainer is easy to install, and convenient to use, just insert it in the car power outlet, as known as the cigar lighter socket or connect the solar panel to the battery with the alligator clips directly