Power & UPS
UPS runtime estimator
Estimate conservative UPS runtime and decide which devices should leave battery-backed outlets.
Use this to plan shutdown time for routers, modems, desktops, NAS devices, and small network gear.
Medium priorityAbout 26 minutes
Runtime looks usable for orderly shutdown planning.
Check first
- Confirm actual watt load from UPS display, smart plug, or device labels.
- Check battery replacement age and health warnings.
- Verify only critical gear is on battery-backed outlets.
Likely wrong
- Conservative estimate: about 26 minutes under the entered load.
- Battery age is likely reducing capacity.
- The entered load is within a typical small-network planning range.
Safe to try
- Move monitors, printers, speakers, and noncritical gear off battery-backed outlets.
- Use the estimate for shutdown planning, not as a guarantee.
- Compare against the UPS manufacturer's runtime chart when available.
When to stop
- Stop immediately for smell, heat, swelling, leaking, sparking, or overload alarms.
- Get qualified help for outlet, breaker, or wiring concerns.
What should I check first?
- Estimate actual watt load for devices on battery-backed outlets.
- Check UPS battery age and health warning lights.
- Remove printers, heaters, speakers, and monitors if runtime is too short.
What is likely wrong?
- The UPS is overloaded for the plugged-in equipment.
- The battery has aged and lost capacity.
- Noncritical devices are using battery time.
What is safe to try?
- Move noncritical gear to surge-only outlets.
- Plan around a conservative runtime, not the highest marketing number.
- Replace batteries only with compatible parts from trusted sources.
When should I stop?
- The UPS smells, leaks, heats unusually, sparks, or has swollen batteries.
- The overload alarm continues after unplugging noncritical load.
- Outlet, breaker, or wiring concerns appear.