Xantrex XPower 300 Plus with Air Compressor This is a terrific, well designed product that can provide temporary power to a wide variety of electrical products. It can even jump-start your car or truck in an emergency (I know, I've tried it!). Includes: 20 Amp-hour AGM Sealed lead acid battery. 300W DC to AC inverter (115V AC) with 1 outlet. 1 DC outlet. LED battery capacity indicators. AC charger, DC charging cable for car charging. 12V - 2 tube fluorescent emergency light. Emergency jumper cables. 300 Plus model includes air compressor to pump up tires, small sports equipment and camping mattresses. Measures 11.8 x 7.2 x 12.5" Can be charged with our 20 watt Sol-charger panel. We'll solder the correct plug to the solar panel cable. The battery in this unit holds about 250 watt-hours of energy. 10 hours of sun with the 20 watt panel would add 200 watt-hours to the battery. Using a vehicles DC output or lighter, the unit will charge in 2-4 hours. AC charger charges in up to 40 hours (500mA). This unit will power a: Clock Radio for 20 hours. Included Fluorescent emergency light for 25 hours. 5" TV for 8 hours. 12" TV for 3 hours. Laptop computer for 6 hours. Cellphone for 36 hours. Built by Xantrex, the maker of Trace inverters, who has built a reputation for their high quality