Continuity baseline
Size the outage path before choosing the box.
Enter the load that must remain on, the useful operating window, and the reserve needed for a safe stop. The result separates delivered energy from nominal battery capacity.
Home power continuity
Reserve enough power to keep the right things alive—and stop the rest safely.
Model the critical load, the runtime you actually need, and the reserve required to shut down storage or services cleanly before comparing a UPS or battery system.
The values below are editable planning baselines. Change the few inputs you know; open Advanced assumptions only when they change your decision.
Next decision
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Continuity brief
Compare equipment against the boundary, not a marketing runtime claim.
Use the required continuous watts and nominal battery Wh as a starting point, then measure runtime and safe shutdown on the installed path.
Next decision
Plan tools
Keep this useful version close, shareable, and easy to revisit.