Battery & Storage Calculators
Size your battery bank for backup, off-grid, or self-consumption.
16 calculators
🔋 Solar Battery Calculator
What battery size for your loads and backup hours?
⚡ Battery Bank Size Calculator
Amp-hours and watt-hours for your battery bank.
🔧 Battery Sizing Calculator
Lead-acid vs lithium — the right capacity.
🏠 Solar Battery Storage Calculator
Battery + solar for self-consumption and backup.
🔋 Lithium Battery Calculator
Lithium (Li-ion/LiFePO4) sizing.
🔋 LiFePO4 Battery Calculator
LiFePO4 specific sizing with cycle life.
🔸 Battery Amp Hour Calculator
Convert between Ah, Wh, and kWh.
🔸 Battery Watt Hour Calculator
Watt-hours from amp-hours and voltage.
⏱ Battery Runtime Calculator
How long will your battery last under load?
⏻ Battery Charge Time Calculator
Hours to charge from solar.
📊 Depth of Discharge Calculator
DoD impact on battery life and usable capacity.
🔄 Battery Capacity Calculator
Capacity conversions and runtime estimates.
🌐 Tesla Powerwall Calculator
How many Powerwalls for your home?
🔋 Battery Backup Calculator
Backup power for outages — hours of coverage.
📅 Days of Autonomy Calculator
How many days can you run without sun?
🔗 Battery Series/Parallel Calculator
Configure your battery bank wiring.