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The number one question from new boondockers: how much solar do I need? Most answers involve spreadsheets. This one doesn't. Start With Your Battery Bank, Not Your Panels Solar panels refill your batteries. So the first question is: how much battery storage do you need? A simple rule of thumb: add up the amp-hours you use in a day and double it. That doubling gives you a 50% discharge buffer, which is important for battery longevity. Typical Daily Usage * Lights (LED) — 5–10Ah/day * Phon
