REKON TECHNOLOGY

UPS & Battery Runtime Calculator

Estimate UPS loading, battery energy, usable capacity, runtime, recommended UPS size, required battery amp-hours, and battery reserve for security and network equipment.

WATTS • VA • AMP-HOURS • RUNTIME

POWER RESULTS

UPS and battery performance

Ready

Enter the load, UPS, and battery values, then calculate.

Estimated Runtime—at stated load
UPS Watt Loading—including surge
UPS VA Loading—apparent power
Usable Battery Energy—after allowances
Required Battery Capacity—for desired runtime
Recommended UPS Size—planning minimum
Runtime Margin—vs desired runtime
Battery Current—estimated DC draw
Design Rating—overall suitability
UPS watt utilization0%
UPS VA utilization0%
Runtime target achieved0%

Power Flow Preview

UTILITY
UPS
LOAD

Engineering Details

Connected Load—
Surge-Adjusted Load—
Battery Bank Energy—
Effective Battery Capacity—
Required Battery Energy—
Battery Capacity Margin—
Design Assessment—

Battery Runtime

Runtime is estimated from battery energy, depth of discharge, aging allowance, inverter efficiency, and connected load. Actual UPS runtime can differ because battery discharge is nonlinear.

UPS Loading

Both the watt rating and the VA rating must be adequate. A UPS can be overloaded by either real power or apparent power.

Design Note

Use manufacturer runtime charts for final equipment selection. Temperature, battery chemistry, discharge rate, maintenance condition, and charger limits affect real-world performance.

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