100 watts is the power output of the battery panel. The operating voltage of the 100 watt battery panel is 18V, the operating current is 5.55A, and the conversion efficiency is 70%-80%. The 100 watt battery panel can charge a 12V50Ah battery, 12x50 = 600 watts Coefficient of 0.7 = 420 A 100 watt electrical appliance can be used continuously for about 4 hours, but if the battery is fully charged with a panel 100 watt battery, it will take 10 to 12 hours to fully charge the 50 Ah
100 watt battery. Solar panels can generate 400-500W of DC power every day. This energy charges the battery and is then converted to 220V AC power via the inverter (efficiency is calculated at 90%), which can run a 100W AC load for 3.5-4 hours. If it is 100W DC load, it can work for 4at 5 o'clock.