Battery Discharge Calculator

Calculate battery runtime, discharge current, and depth-of-discharge for lead-acid and lithium-ion batteries.

Rated capacity in amp-hours.
Ah
Battery nominal voltage.
V
Connected load in watts.
W
Lead-acid: 50%, Lithium: 80-90%.
%
Inverter/converter efficiency.
%

Results

Discharge Current-A
Usable Energy-kWh
Runtime-hours
C-Rate-
Total Stored Energy-kWh
References: IEEE 485 — Lead-Acid Batteries; IEEE 1188 — VRLA