Powoxi 7.5W-Solar-Battery-Trickle-Charger-Maintainer-12V Portable Waterproof

Efficient conversion. Quality solar silicon material ensures high conversion and stable output, which is 20%-30% higher than average solar panels, and it even can charge your battery on cloudy days. Comprehensive Battery Protection.  Solar car battery trickle charger fully protects the battery. The built-in blocking diode structure ensures no reverse discharge, overcharge, overvoltage, or short circuit. With LED charging indicators, you could easily tell if the solar battery charger is functioning well. What's in the box 1 X 7.5W Solar panel only