Battery Sizing Calculator

Calculate battery capacity for your power needs. โš ๏ธ Educational tool only โ€” always consult professionals.
โšก Enter Your Power Requirements:
Watts
Volts
Hours
%
Quick Examples:
โš ๏ธ Important Battery Safety & Facts
Formula: Ah = (W ร— h) / (V ร— Efficiency)
Amp-hours = (Watts ร— Hours) รท (Volts ร— Efficiency)
โš ๏ธ Critical Safety
โ€ข Always consult qualified electricians
โ€ข Follow manufacturer datasheets
โ€ข Comply with local electrical codes
Battery Types
โ€ข Lead-acid: Cheap, heavy, 50% DoD
โ€ข Lithium: Light, expensive, 80% DoD
โ€ข Deep-cycle: Best for long runtime
Pro Tips
โ€ข Add 20-30% safety margin
โ€ข Consider temperature effects
โ€ข Factor in battery aging
โ€ข Include inverter losses
Disclaimer:
This tool provides educational estimates only. Actual battery sizing requires professional engineering review. Always verify with manufacturer specifications and local regulations.