SUNAPEX 20W Solar Panel Car Battery Trickle Charger Maintainer, 12V Portable Waterproof Solar Panel Trickle Chargering kit for Car Boat RV Motorcycle Truck Marine

[More efficient]: 22% high conversion rate crystalline silicon material + 95% high transmittance ETFE material, greatly improving the charging efficiency of solar chargers. The honeycomb structure increases the power generation by 10%, which can achieve the most ideal charging effect in a limited space. [Built-in intelligent controller]: The charging algorithm is upgraded, and the charging efficiency is increased by 10%-20%. It is automatically charged during the day and turned off at night without consuming battery power. Provides multiple protections such as overcharge protection, over discharge protection, short circuit protection, overload protection, reverse polarity protection, etc. [Easier to monitor]: The solar panel junction box has three-color LED indicators, which help visually monitor the working status. Solid blue-Receiving sunlight, output normal; Solid Red-Connected to battery, charging; Solid green-Battery is full; No lights on-Short circuit occurred. [More robust and durable]: In order to reduce the internal chipping of solar panels and reduce the conversion rate. We added a layer of PCB to make the panel more robust. Using waterproof and heat-resistant ETFE instead of PET can extend the service life by 5 times. The attached wire has been upgraded and thickened to be more durable. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions., Weight: 2.0 pounds, Manufacturer: SUNAPEX