Calculator
Battery Backup Runtime Calculator
How many hours your battery carries critical loads in an outage.
Open calculatorCalculator category
Storage calculators
Size home batteries, backup runtime, payback, and replacement cost.
Calculator
Battery Bank Size Calculator
Off-grid battery bank from daily use, autonomy, and discharge depth.
Open calculatorCalculator
Battery Capacity Converter (Wh / Ah / kWh)
Convert Ah, Wh, and kWh at any voltage.
Open calculatorCalculator
Battery Charging Time Calculator
Charge time from current to target state of charge.
Open calculatorCalculator
Battery Cost per kWh Comparison
Upfront vs lifetime $/kWh of two battery options.
Open calculatorCalculator
Battery Degradation and Lifetime Estimator
Remaining cycles and lifetime throughput of a battery bank.
Open calculatorCalculator
Battery Inverter Size Calculator
Inverter kW rating with headroom and surge coverage.
Open calculatorCalculator
Battery Replacement Budget Planner
Future battery cost and monthly savings reserve.
Open calculatorCalculator
Battery Series-Parallel Calculator
Pack voltage, Ah, and kWh from series/parallel cell counts.
Open calculatorCalculator
EV Battery Range and Charging Calculator
Range, charging time, and full-charge cost from pack size.
Open calculatorCalculator
Generator vs Battery Backup Comparison
Horizon backup cost of generator versus battery.
Open calculatorCalculator
Off-Grid Solar + Battery Sizer
Battery bank plus solar array for an off-grid site.
Open calculator