• DIMENSIONS AND WEIGHT: 18 x 12 x 15 inch without cart, 23 x 17 x 22 inch cart 120 lbs Please note: The cart needs to be installed by yourself. All mounting hardware included in the package • Battery Type: 100Ah (1200Wh) AGM Sealed Lead Acid We recommend charging every 4 months • Three charging methods: Solar panel, wind turbine and AC power supply. Charging speed depends on sunlight and wind strength. For example: When using a 100-watt solar panel, the Nature's Generator takes approximately 15-20 hours to charge. It also depends on the intensity of the sun • How to increase your charging speed: Solar/wind input port supports up to 300 watts of solar power/wind power. This means you can connect three 100-watt solar panels in parallel before plugging into the solar input port. Connect two 150-watt wind turbines in parallel before plugging into the wind power input port