To charge a 220 Ah battery in 6 hours, you need a solar panel with at least 550 watts. This wattage accounts for efficiency losses. To ensure sufficient charge, use 1 solar panel of 550 watts or more for effective charging.
If you expect about 5 hours of effective sunlight per day, divide 2,640 Wh by 5 hours. This calculation indicates a need for at least a 528-watt solar panel system (2640 Wh / 5h = 528 W). It is prudent to add a buffer for efficiency losses, typically around 20%. This adjustment suggests using a solar panel system of approximately 630 watts.
Ultimately, the quality and efficiency of the panels affect the output. The next section will explore additional factors, such as choosing the right solar panel type and how solar charge controllers enhance battery charging efficiency.
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