SUNER POWER 20W 12V Solar Battery Trickle Charger Maintainer PRO, Built-in Intelligent MPPT Controller, Waterproof 12 Volt 20 Watt Solar Panel Charging Kits for Car Marine RV Trailer Boat Automotive Item Description About this item ??Portable Charge Anywhere?- Lightweight and portable solar charger. Transfer sunshine into electricity, charge and maintain different 12V battery such as flooded, gel, AGM, SLA, VRLA, lithium-ion battery of RV, car, boat, marine, automotive, snowmobiles, 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 working status of the charging. Charging will be cut off automatically when battery is fully charge, and resumed when battery goes flat, totally free maintenance. ??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