1. The solar battery efficiency of this solar charger is as high as 20%, the dual output voltage is 18V-5v, and the power is 20W, which is very suitable for maintaining the batteries of cars, motorcycles, tractors and even ships. It also provides you with two charging methods: 3. Support rechargeable car battery, used as emergency power supply, solar light 2. Suitable for charging mobile phones, tablets and other USB interface electronic products 4. The transparent film replaces the traditional tempered film. The thickness is less than 3 mm. It is light and easy to carry. It is suitable for outdoor work, travel or camping. It can be used to charge 12V lead-acid batteries or 12V lithium batteries. 5. Use central control computer, car refrigerator, air purifier, driving recorder, MP3 fan and other on-board equipment when parking, without consuming battery power., Manufacturer: Mcnhbdgg