5 TOOLS · ONE CLEAR STARTING POINT
Battery calculators
Turn battery ratings into useful energy, capacity and charging estimates.
5 calculators
Battery
Battery Runtime
How long will your battery last?
Open calculator BatteryBattery Capacity
Find the capacity your plan needs.
Open calculator BatteryBattery Backup
Add up your everyday backup loads.
Open calculator BatteryBattery Charging Time
Estimate the time to recharge.
Open calculator BatteryBattery C-Rate
Understand current relative to capacity.
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Clear assumptions, not false certainty.
All tools include a formula, a worked example and the limits of the estimate. Read our methodology.