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Watt Warden

Backup power, worked out

Best Home Backup Power

Right-sized home backup power, matched to the outage you actually get.

A four-hour outage, a two-day outage and a six-day outage are three different purchases. We compute which one you are making from published specifications and real outage data, and we show the arithmetic so you can check it.

Work out what size you need
46
Pages, every figure sourced
12
Roundups with a stated skip-this on every pick
21
Products, every spec linked to its source
0
Units we claim to have tested

Everyone in this category says they tested twenty units. We have not tested any, and we say so. Here is what we do instead.

A dark suburban street at night with a single window lit in one house.

Why are you buying?

The same battery is an excellent camping purchase and a mediocre storm purchase. What you are buying for changes the answer more than any specification does.

What wins each category

The top pick from every roundup on the site, with the page it won on. Each one carries a stated reason to skip it.

Everything on the site

Six categories and a scenario axis. Sizing is the one to read first — everything else depends on the number it produces.

Read these first

The pages that carry the argument — each one sized against a real load list, with runtime and running cost computed rather than claimed.

How this is funded

Watt & Warden is a participant in the Amazon Services LLC Associates Program. We earn a commission on qualifying purchases made through links on this site, at no extra cost to you.

It has never changed a ranking, and it cannot: every pick carries a stated reason to skip it, prices render only from a live data layer or not at all, and we publish no rating of our own because we run no test bench. The full disclosure, the editorial policy, and the method.

Latest

Every page on the site