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 ??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 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. Product Description As we all know, batteries naturally drain power and if allowed to go flat, may never regain their full power. This product is a solar powered battery maintainer and charger for 12V batteries and helps manage battery drain in all season. The solar charger converts light energy from the sun into 12 volt DC electricity which is then transported to the rechargeable batteries through lead wire and connector of choice, replace the self-discharge of a battery in storage, so that the battery wouldn't "go dead". It can be used for cars, 4WD?s, trucks, motorcycle, marine, boats, farm equipment or any application where a 12V battery is used. The high efficient solar panel allows to absorb a wider spectrum of sunlight, as long as there is sufficient sunlight available, the charger will generate an electrical current to trickle charge the battery. The charger is built in the most super-intelligent MPPT(Maximum Power Power Tracking) chip to intelligently charge and fully protect the battery. The MPPT technology helps to generate at least 20%-30% more power than traditional PWM. And the LED indicator helps better understand the charging status on all days. Visual LED Indicator The led indicator allow to clearly monitor working status: Blink Green: Sunshine is effective (Not Acitve yet) Blink Red: Working to charge battery (Activated) Solid Green: Battery is fully charged Solid Red: Error-Reversed polarity High Efficiency Solar Cell Made of high efficiency, 30% more than competitors, works great in sunlight. The surface was covered by tempered solar glass, protecting the solar cells from snow, hail, dust, etc. IP 65 Wateproof IP 65 waterproof design, withstand rain and snow, no worry to mount it outside, totally free maintenance. Item model number BC-20W-Pro Batteries required No Product Dimensions 20.15"D x 13.78"W x 0.7"H Item Weight 5.09 pounds Color Navy Blue Input Voltage 18 Volts (DC) Output Voltage 12 Volts (DC) Manufacturer SUNER POWER Brand SUNER POWER Size 20W Shipping Fast shipping is very important for us. Our standard US shipping service is FREE. Your order will be shipped within 2-3 business days upon full payment received. Your order will be delivered within 2-3 business days after the handling time. We only ship to the confirmed PayPal address. We reserve the right to cancel any order for any reason at any time. We are not responsible for undeliverable addresses. Returns and payment We offer a 30 days return policy from checkout winning date. We allow only PayPal as payment method FeedBack Your feedback very important to us, after you get your package and you are satisfied with our service please leave us positive feedback If you have any problem with your order / any questions please before leave any type of feedback For any questions, using contact system Please visit our store to check out other items for sale! Thank you for shopping at our store.