Model Number: HSF 1Kw Brand Name: HOLLEY INTL Key Specifications/Special Features: In off-grid solar system, the battery is charged by the solar energy via the charge controller.The inverter converts the direct current (DC) current of the battery into alternating current (AC) to supply common AC appliances.For hybrid system, the grid and/or generator are complement to the solar energy. Therefore, the hybrid system is more stable. Main Items:NOItem Description Quantity 1 Solar panels 150W/18V, poly-crystal. 4pcs 2 Battery 12V/200Ah, gel. 2pcs 3 Inverter 1kW/220Vac/50Hz. 1pc 4 Charge controller PWM, 24Vdc/20A. 1pc 5 Mount To fix 600W solar panels. 1pc 6 Distribution box Include breakers, plugs, protectors. 1pc 7 Distribution box 4 into 1. 1pc 8 Accessory Cable, battery connector, etc. 1pc