SUNER POWER Waterproof 12W 12V Solar Battery Charger Maintainer Pro, Built-in Intelligent MPPT Charge Controller, 12 Volt Solar Panel Trickle Charging Kits for Car Automotive Boat Marine RV Trailer Item Description About this item ??Portable Charge Anywhere?- Lightweight and portable solar charger. Transfer sunshine into electricity, charge and maintain different 12V batteries such as flooded, gel, AGM, SLA, VRLA, lithium-ion battery of RV, car, boat, marine, automotive, snowmobiles, trailer, camper, etc. in all seasons. US PATENT PENDING! ??Intelligent Charge Maintain?- Fully protect the battery! Built-in intelligent MPPT controller, generates at least 20%-30% more power than the other controller. Smart 3-stages charging algorithm effectively prevents the battery from over-charge, over-voltage, discharge, short circuit, etc. ??Upgraded Visual Monitor?- The colorful LED indicator helps to visually monitor the working status of the solar panel and battery. Charging will be cut off when a battery is fully charged and resumed automatically when the battery has a discharge, totally free maintenance. No need to worry battery going flat anymore! ??Waterproof Hign quality Materials?- Use 30% high conversion efficiency crystalline silicon material + high-strength solar energy glass which has 95% strong light transmittance and waterproof performance, can withstand harsh weather conditions. ??Free Maintenance?- Tempered glass and strong ABS frame, well built for years. Come with 3-piece SAE cable kits, plug and play, easy to use. No electricity cost, free maintenance for outdoor usage. Backed by extended 12 months warranty + lifetime technical supports. Payment We accept payment only through PAYPAL Shipping We ship products worldwide through standard express courier service, it will reach within 7 to 10 days to abroad buyers, we ship the product after recieved clear payment and give full information about shipment to the buyer Return We accept product return within 7 to 21 days from delivery date but product should be in original position and not in damaged condition,the return shipping charges will be buyer responsibility