Outage readiness

Emergency preparedness

Protect communication, medical needs, food, lighting, heat controls, and water management in that order—then plan how the battery will be recharged.

See best picks Compare products Calculate runtime

Decision chart Estimated runtime at an 80W emergency load bundle Starting estimate using 80% usable energy. Real runtime changes with surge, cycling, temperature, inverter draw, and battery condition.

300Wh battery 3 hr

500Wh battery 5 hr

1,000Wh battery 10 hr

2,000Wh battery 20 hr

3,600Wh battery 36 hr

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Most useful guides

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Recommended starting points

Products that fit this category

Use the linked guide and calculator to confirm the fit before buying.

Best budget UPS

UPS · Best for Router, modem, and small electronics

APC BE600M1

600VA 330W output Sealed lead-acid

Check today’s Amazon price paid link Read the guide Official specifications ↗

Best all-around 1kWh pick

Power station · Best for Home outages, refrigerators, camping, and mixed loads

EcoFlow DELTA 2

1,024Wh 1,800W output LiFePO4

Check today’s Amazon price paid link Read the guide Official specifications ↗

Best heavy-load portable system

Power station · Best for Home backup, long outages, workshops, and large appliances

EcoFlow DELTA Pro

3,600Wh 3,600W output LiFePO4

Check today’s Amazon price paid link Read the guide Official specifications ↗

Two-minute sizing start

What are you trying to keep running?

Pick the load and target time. We will estimate the battery class, then send you to the right guide and full runtime calculator.