power

Estimates UPS (Uninterruptible Power Supply) backup runtime from battery specifications and connected load. Takes VA rating, watt rating, load in watts, and battery configuration (count, voltage, amp-hours) to compute effective stored energy after efficiency losses and runtime in minutes and hours. Detects overload conditions when load exceeds the UPS watt rating. Calculates power factor from VA/W ratings. Ideal for server rack planning, homelab power budgeting, network closet UPS selection, and graceful shutdown timer configuration.

post/api/ups_runtime

Request

  • Base URL: https://calc.engineer
  • URL: https://calc.engineer/api/ups_runtime
  • Auth: none declared

Request body

va_ratingnumber required

UPS VA (volt-ampere) rating

watt_ratingnumber required

UPS real power (watt) rating

load_wattsnumber required

Connected load in watts

battery_countnumber

Number of batteries in the UPS

battery_voltagenumber

Voltage per battery (V)

battery_ahnumber

Capacity per battery in amp-hours (Ah)

efficiencynumber

Inverter/conversion efficiency (0-1), default 0.9

Response

Computed result for ups_runtime

toolstring required
versionstring required
computed_atstring date-time required

Changes

No recorded changes to this operation across all 1 revision of this API.