Backup Hours Calculator
How long will your backup last?
Select the appliances you want to keep running and compare estimated backup time across the full PuREPower range.
Estimated Connected Load
0 W
Select appliances on the left to see compatible PuREPower models and estimated backup time.
Backup-time estimates are indicative only. Actual performance varies based on appliance load, usage pattern, system configuration, battery condition, temperature and operating conditions. Final sizing should be confirmed through an assessment.
Formula: Estimated Backup Hours = (Battery Capacity in kWh × 90% usable depth-of-discharge × 90% system efficiency) ÷ Total Connected Load in kW.
Want a precise, personalised recommendation?
A free assessment accounts for your exact load, electrical phase and backup goals — not just an estimate.