Feature: 1. Efficient Charging: Built in MPPT charging controller chip, which is helpful to adjust the whole charging, and adopts 3 stage charging algorithm, efficient and practical. 2. Good Protection: With battery overcharge, overvoltage, discharge, short circuit, reverse connection protection, IP67 waterproof and fireproof, ensuring stable charging. 3. Automatic Charging: LED indicator to monitor the working state, automatically stop charging when the battery is fully charged, and automatically recover when the battery is exhausted. 4. Excellent Material: The ETFE laminated shell is durable enough, and a layer of epoxy resin plate is added as the base plate, which extends the service life of the solar panel. 5. Applicable Battery: Suitable for 12V DC battery, including wet gel battery, deep cycle, maintenance free, AGM battery, etc., used for automobile, boat, RV, lawn mowers, etc. Specification: Item Type: Solar Battery Charger Material: Monocrystalline silicon, ETFE Waterproof Grade: IP67. Package List: 1 x Solar Panel1 x Battery Connection Cable1 x Car Charging Cable4 x Suction Cups1 x User Manual Note: 1. There is a slight error in the size.2. Without power storage function.