What 102 Portable Power Stations Tell Us About Buying One in 2026

If you've ever tried to buy a portable power station, you know the problem: every brand claims to be the best, the spec sheets are a wall of numbers, and the forums are full of confident but contradictory advice. "What size do I actually need?" is the most-asked question and the least-clearly-answered. So I did the boring thing. I built a structured database of 102 portable power stations from 24 brands — capacity, output, chemistry, cycle life, solar input, weight, price — and started running the numbers. A few findings were genuinely surprising. 1. Prices quietly collapsed The median portable power station now sits at $0.61 per watt-hour . The cheapest in the dataset is $0.39/Wh (the GRECELL T1000). A few years ago, ~$1/Wh was normal and anything under $0.70 felt like a deal. The practical takeaway: if you're paying much more than ~$0.70/Wh in 2026, you're mostly paying a brand premium. That premium sometimes buys you a better app, ecosystem, or support — but it's worth knowing you're paying it. 2. LiFePO4 basically won 94% of the models I track now use LiFePO4 (lithium iron phosphate) instead of the older lithium-ion (NMC) chemistry. This matters more than any marketing bullet point: LiFePO4: ~3,000–4,000+ charge cycles Older Li-ion (NMC): ~500 cycles At daily use — say you cycle it every day in a van or for backup — that's roughly 8 years vs 18 months before the battery is meaningfully degraded. If a listing still uses NMC to hit a lower price, that "deal" can cost you far more over its life. 3. The fridge myth costs people hundreds of dollars This is the single most common sizing mistake. People size a giant, expensive battery to run a fridge because they do the math like this: Fridge nameplate (150W) × 24 hours = 3,600 Wh/day But a fridge's compressor only runs about 40% of the time . Its real average draw is closer to 60W, so: 150W × 40% × 24h ≈ 1,440 Wh/day In runtime terms: a 1,000Wh power station runs a full-size fridge for about 14 hours , not the ~6 hour