A power outage is a bad time to learn that the “2,000W” on the box isn’t the whole story. This guide covers what actually matters for home backup — capacity, surge output, and recharge speed — and which portable power stations are worth your money right now.
How we picked: we compared verified manufacturer specs, battery chemistry, warranty terms, and thousands of owner reports across retail platforms and owner communities. We have not bench-tested every unit in this guide yet; where hands-on testing matters, we say so. How we work.
The short version
| Pick | Unit | Capacity | AC output | Why it wins |
|---|---|---|---|---|
| Best overall | EcoFlow Delta 2 Max | 2,048Wh (expandable) | 2,400W | Fast charging, huge expansion ecosystem, strong app |
| Best budget | Bluetti AC180 | 1,152Wh | 1,800W | The cheapest LiFePO4 unit that still runs a fridge |
| Best for whole-home | Anker Solix F3800 | 3,840Wh (expandable to 26.9kWh) | 6,000W, 240V | Only unit here that can drive 240V appliances |
| Best for apartments | Jackery Explorer 2000 Plus | 2,042Wh (expandable) | 3,000W | Quiet, wheels, no-fuss setup |
| Best compact | EcoFlow Delta 2 | 1,024Wh | 1,800W | Under 60 lbs, charges 0–80% in about 50 minutes |
Specs verified against manufacturer pages; always confirm current specs and price before buying.
How much backup power do you actually need?
Forget marketing names for a minute. Sizing a backup unit is three questions:
1. What must stay on? For most homes the answer is the refrigerator, the internet router, some lights, and phone charging. Here’s what those draw:
| Device | Typical running watts | Notes |
|---|---|---|
| Refrigerator (modern, full size) | 100–200W | Compressor surge can hit 1,200W for a second — this is why output rating matters |
| Internet router + modem | 10–20W | Cheap to keep alive, big quality-of-life win |
| LED lights (5 bulbs) | 50W | |
| Phone / laptop charging | 20–100W | |
| Sump pump | 800–1,500W | High surge; needs a 2,000W+ unit |
| Window AC (10,000 BTU) | 900–1,200W | Doable on big units, eats the battery fast |
| Furnace blower (gas furnace) | 300–800W | Usually hardwired — needs a transfer switch |
| CPAP machine | 30–60W | See our CPAP guide |
2. How many watt-hours is that? Watts × hours = watt-hours (Wh). A fridge cycling on and off averages ~60W over a day in mild weather: about 1,400Wh per day. Add router, lights, and devices and a realistic “essentials” budget is 1,500–2,500Wh per day.
3. How will you recharge it? This is the question people skip. A 2,000Wh battery with no recharging is one day of essentials. The same battery with 400W of solar panels in decent sun is indefinite. If your outage risk is hurricanes or ice storms (multi-day), solar input matters as much as capacity.
Rule of thumb: for overnight outages, 1,000–2,000Wh is enough. For multi-day outage prep, buy 2,000Wh minimum with expansion support and at least 400W of solar input.
What actually matters (and what doesn’t)
- Battery chemistry: insist on LiFePO4. It lasts 3,000+ charge cycles versus ~500 for older lithium-ion, and it’s more heat-stable. Every unit in our picks uses it. A backup unit you charge twice a year will outlive you either way, but LiFePO4 is now standard at every price, so there’s no reason to accept less.
- Output rating vs. surge rating. Running watts is what the inverter delivers continuously; surge (or “peak”) is a few seconds for compressor starts. A fridge needs roughly 1,200W of surge headroom — every unit above handles it.
- EPS/UPS mode. Some units can sit plugged into the wall with devices plugged into them, switching to battery in ~20–30ms when the power fails. That’s fast enough for a fridge and a router, though not a guarantee for sensitive desktop PCs. Look for “EPS” or “UPS mode” in the spec sheet.
- Expansion batteries. EcoFlow, Jackery, Anker and Bluetti all sell add-on batteries that double or triple capacity later. If you’re not sure how much you need, buying an expandable base unit is the safe move.
- Ignore: app gimmicks, built-in lights, and “X-Boost/Power Lifting” marketing names. Those modes let units run resistive loads (heaters, kettles) above their rated output by dropping voltage — fine for a coffee maker, irrelevant for backup duty.
Our picks, in detail
Best overall: EcoFlow Delta 2 Max
The Delta 2 Max (2,048Wh, 2,400W output) hits the sweet spot for most homes: it runs a fridge plus router and lights for a full day, recharges from a wall outlet unusually fast (0–80% in roughly an hour by manufacturer specs), and expands to 6kWh with add-on batteries. EcoFlow’s app and ecosystem are the most polished in this category. It’s the one we’d buy for a first backup unit.
Best budget: Bluetti AC180
At 1,152Wh and 1,800W, the AC180 is the cheapest LiFePO4 unit we’d trust with a refrigerator. It covers an overnight outage for essentials and frequently sells well below list price. The catch: 1,152Wh is tight for anything beyond a day, and expansion options are limited compared to EcoFlow. Buy it for short-outage insurance, not hurricane prep.
Best for whole-home backup: Anker Solix F3800
The F3800 is a different class: 3,840Wh base capacity, 6,000W output, and — uniquely in this roundup — 120V/240V split-phase output, which means it can run 240V appliances like well pumps and some central AC systems when paired with Anker’s home panel accessories. It expands to a genuinely whole-home 26.9kWh. It’s heavy (130+ lbs) and expensive, but it replaces a gas generator outright.
Best for apartments: Jackery Explorer 2000 Plus
Jackery’s design language is the friendliest here: wheels, a pull handle, and a dead-simple interface. The 2000 Plus (2,042Wh, 3,000W) expands up to 24kWh with extra batteries — the highest ceiling in this list — and Jackery’s warranty and support reputation is strong. It’s a few hundred dollars more than the Delta 2 Max at similar capacity; you’re paying for simplicity and expansion headroom.
Best compact: EcoFlow Delta 2
If 2,000Wh is more than you need, the original Delta 2 (1,024Wh, 1,800W) remains the best compact backup unit: light enough to carry one-handed, charges absurdly fast, and often discounted now that it’s the older model. Good for renters and short outages.
When a gas generator is still the right answer
Power stations have a real limit: once the battery is empty, recharging without grid power means solar, and winter storm weeks can be grey for days. If your risk profile is “multi-day winter outages in a rural area,” a dual-fuel generator plus a small power station (for overnight quiet hours) is a more resilient combo than either alone. For everyone else — suburbs, cities, outage windows under 48 hours — a power station is quieter, safer indoors, and maintenance-free.
FAQ
(See the questions at the top of this page — and if yours isn’t answered, ask us.)
Frequently asked questions
Can a portable power station run a refrigerator?
Yes — any unit with at least 1,000W of AC output handles a standard fridge's compressor surge, and a 2,000Wh battery typically keeps a modern fridge running for 12–24 hours. The math is in the sizing section below.
How long will a power station run my home during an outage?
Multiply what you plug in by hours of use. A 2,000Wh unit runs a fridge (about 150W average) plus router and lights for roughly 8–12 hours. Whole-home coverage for days requires either a large expandable system or recharging from solar.
Is a power station better than a gas generator for home backup?
For most outage scenarios under 24 hours, yes: no fumes, safe indoors, silent, and instant on. Gas generators still win for multi-day outages in cold climates where you can't count on solar recharging.
Do I need an electrician to use one for home backup?
Not for the basics — you plug devices directly into the unit. If you want it wired into your home's panel via a transfer switch, that job should be done by a licensed electrician.