✅【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. ✅【Stronger and More Durable】 The solar car charger adopts high-transparency glass, which is high-strength, impact-resistant, wind-snow-resistant low-iron tempered. And the sturdy ABS frame makes the solar panel more durable than others.Smooth surface, don't worry about scratching the vehicle. This waterproof solar battery charger needs no additional maintenance, extra long service life and durable. ✅【Easy to Install and Use】 The outdoor 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 just connect the solar panel to the battery with the alligator clips directly. The perfect charger/maintainer for any car, motorcycle, boat, tractor, ATV, farm equipment, and 12V batteries. ✅【12-Month Warranty】 The quality of your premium solar battery charger is guaranteed by CE/ROHS certifications and comes with a free 12-month warranty+lifetime technical support! If you have any questions, please contact us. Your suggestion helps us improve!