Backup Power & Energy

A rechargeable lantern with battery backup gives you two ways to keep the lights on. Here is why hybrid power makes sense during outages.

Use this lead-acid battery voltage chart to estimate state of charge at rest. Includes 6V, 12V, 24V and 48V values, plus specific gravity for flooded batteries.

Learn what size power inverter a car 12V outlet can safely handle, how to avoid blown fuses, and what devices you can run from 110V AC power.

How long will a Jackery Explorer 1000 v2 run a refrigerator? See realistic runtime estimates and learn how to test your own fridge before an outage

The Jackery Explorer 2000 v2 combines 2,042Wh, 2,200W output, and a 39.5-pound weight. See what it can run and why its low weight matters.

After years of use, I recommend a line-interactive CyberPower UPS for WiFi, Starlink, a NAS, PCs, and TVs. See which size fits your setup.

Learn when a surge protector is enough, when sensitive electronics need a UPS with AVR, and how to choose the right protection.

Choosing the right size portable power station comes down to two questions. How much power might your devices demand at…

EcoFlow DELTA 2 vs DELTA 2 Max compared. See capacity, runtime, charging speed, and which portable power station is best for camping, RVs, or home backup.

Firewood BTU chart ranking wood species by millions of BTUs per cord. Compare heat output and see which woods burn longest in a stove or fireplace.

At what temperature do lead acid batteries freeze? See a clear freezing-point vs state-of-charge chart, learn why dead batteries freeze at 32°F, and how a simple trickle charger can prevent winter battery damage.