Battery / Hybrid Backup Sizing
Size a battery bank for a critical load and an autonomy target, then check how long the generator takes to recharge it.
Result
Battery capacity to install
—
Discharge C-rate
—
Inverter continuous rating
—
Recharge time from empty
—
Formula
Calculation logicWhat to check
- Critical load list with measured runtimes
- Inverter and battery data sheet depth of discharge and round-trip efficiency
Related calculators
Calculator
UPS + Generator Compatibility
Rectifier type, harmonic current, and the sizing ratio that keeps a UPS from shutting a generator down.
Open calculatorSaved calculations
Keep the assumptions with the result.
Save this calculation to return to the inputs, result, and report anytime.
Sign in or create an account to save this calculation.