SUNAPEX 20W Solar Panel Car Battery Trickle Charger Maintainer, 12V Portable Waterproof Solar Panel Trickle Chargering kit for Car Boat RV Motorcycle Truck Marine

👍【30% High Efficiency】20W solar car battery charger is made of more effective monocrystalline silicon material, which absorbs solar radiation heat to a greater extent. The power generated is at least 30% higher than another solar panel charger, which greatly improves the charging efficiency and speed. 👍【Upgraded Smart Controller】With upgraded Intelligent charger controller and charging algorithm, more than 20%-30% more power than other solar charge controllers. SUNAPEX 20w solar battery charger ensures no reverse discharge, overcharge, over-voltage, or short circuit, charging and maintenance of your 12v batteries. 👍【LED Indicators】SUNAPEX 12v solar battery maintainer has 3 color LED indicators that help visually monitor the working status. Solid blue indicates receiving sunlight and the output is normal. Solid red indicates connected to the battery and charging. Solid green indicates the battery is full. No lights indicate a short circuit occurred. 👍【Charge 12V Batteries】The solar pan