Battery
Runtime
How long a battery will actually power your load, with Peukert correction for lead-acid.
Open calculator →Amp Hours
Needed
Size a battery bank from your loads, runtime, and days of autonomy.
Open calculator →Amp-Hour
Conversions
Convert between watts, amps, capacity, and runtime in one place.
Open calculator →Solar Panel
Sizing
Size an array from daily energy, sun hours, and battery storage, for off-grid, RV, or backup.
Open calculator →