Portable Power Stations Compared 2026

A power station stores direct current. Your laptop charger, your fridge and your CPAP all want alternating current at 120 volts. Converting one into the other is the inverter's job, and no inverter is free — it draws power to run and loses more as heat.

In practice that costs somewhere between ten and twenty percent. We use 85 percent throughout this site, which is the conservative end of what manufacturers themselves quote. So a station sold as 1,000 Wh puts roughly 850 Wh into your devices.

The second thing worth knowing: almost every listing here says solar generator. There is no generator inside. It is a battery, and the solar panel is usually sold separately. Read the "what you get" line before you assume a panel is in the box.

This is the single biggest difference between two units that otherwise look alike, and it is the one most buyers skip past.

LiFePO4 (lithium iron phosphate) typically survives 3,000 or more charge cycles before dropping to 80 percent of its original capacity. Charge it once a week and it will outlast the decade. It also tolerates heat better and is the safer chemistry under abuse.

Older lithium-ion packs manage roughly 500 cycles. They are lighter for the same capacity, which is why compact units still use them, but a unit you charge weekly is worn out in about two years.

The number on each card is not a verdict handed down from a test bench. It is arithmetic, and you should be able to check it, so here is exactly what goes into it.

The customer rating sets the starting point. Ratings are the only channel through which real long-term use reaches us — we have not lived with these units, but thousands of buyers have. A raw star average would be unfair to new models, so the rating is smoothed toward the field average: a 4.9 from twelve reviews counts for far less than a 4.6 from eleven thousand.

The specifications adjust it by up to ten points. Within that technical part, capacity counts 35 percent, continuous output 30 percent, battery chemistry 20 percent and weight 15 percent. Capacity, output and weight are ranked only against units in the same size class, so a 292 Wh unit built for a tent is never punished for not being a home battery.

Two things are deliberately left out. Recharge time is not scored, because manufacturers quote it to different targets — some to 80 percent, some in an app-only fast mode — which makes the numbers incomparable. Port count is not scored either, because listings lump AC outlets, USB and car sockets into one figure; scoring it would measure how thorough the seller's copy is, not how good the product is.

Specifications last verified against the manufacturer listings on September 6, 2026.