Estimate runtime from battery voltage, Ah capacity, usable depth, inverter efficiency and load power.
Results are for information and preliminary estimation. For critical technical work, manufacturer data, local codes and qualified professional review take precedence.
Usable energy ≈ V × Ah × usable fraction × inverter efficiency. Runtime = usable Wh / load W. Battery chemistry and high-current behavior affect real results.
Example: A 12 V 100 Ah battery at 50% usable capacity and 90% inverter efficiency provides roughly 1.8 hours at a 300 W load.
Electrical and energy calculations are not final designs by themselves. Load profile, conductor conditions, protection, efficiency and local codes must be considered together. Sorsana tools are intended for preliminary sizing and scenario comparison.
Deep discharge can shorten the life of some chemistries, especially lead-acid. Usable depth depends on battery type.
Inverter losses, battery age, temperature, high discharge current and wiring losses can reduce runtime.
Tell us if a calculation is unclear, incomplete or appears incorrect.