Anker SOLIX F3800 Plus
Top of the ranking on this page, using the criteria below.
3.84 kWh · 6 kW AC · 72.8 lb · $0.62/Wh
Best of · Home backup
Best portable power stations for home backup and blackouts
A blackout kit is judged by two things: whether it keeps sensitive equipment alive through the switch, and how long it runs the essentials. This list ranks on home-backup readiness — output, expandability, UPS behaviour and value — and is honest about the loads a battery cannot carry.
WattPicks does not test power stations, and this page does not claim to. Every specification, price and derived figure is read from the manufacturers’ own product pages; the ranking is computed from that data using the criteria stated above, not from first-hand use.
How this list was chosen
- Home-backup readiness, the composite this site publishes with its inputs and weights stated.
- Restricted to 1,000 Wh and above, because below that a fridge overnight is not realistic.
- UPS switchover time, which decides whether a desktop, router or modem survives the transition.
- Expansion support, so the system can grow rather than being replaced.
68 models in the dataset match this page’s scope, and 65 of them publish a list price, which is what the value figures need. Nothing here has been tested by us.
Quick picks
oupes Mega 3
The lowest published list price in this shortlist ($1,199).
3.07 kWh · 3.6 kW AC · 83.3 lb · $0.39/Wh
The shortlist, with what to accept
Every entry carries its trade-offs. They are computed by comparing the model with the others in its own capacity band, so they are statements about this dataset rather than opinions.
1. Anker SOLIX F3800 Plus
90/100Why it is here: Best for home backup — weighted score over switchover time, output-to-capacity ratio and capacity
What you accept
- Costs $0.62 per watt-hour against a band median of $0.49 — you are paying for something other than stored energy.
- No published noise figure, which matters if it will run in a bedroom or a tent.
- At 72.8 lb it is a two-person lift, not something you carry far.
Who should skip it: Skip it if you have to carry it any distance; this is a leave-it-in-place unit.
2. oupes Guardian 6000 V2
86/100
Why it is here: Best for home backup — weighted score over switchover time, output-to-capacity ratio and capacity
What you accept
- No published noise figure, which matters if it will run in a bedroom or a tent.
- At 111.8 lb it is a two-person lift, not something you carry far.
Who should skip it: Skip it if you have to carry it any distance; this is a leave-it-in-place unit.
3. EcoFlow DELTA Pro 3
85/100
Why it is here: Best for home backup — weighted score over switchover time, output-to-capacity ratio and capacity
What you accept
- Costs $0.68 per watt-hour against a band median of $0.49 — you are paying for something other than stored energy.
- At 113.5 lb it is a two-person lift, not something you carry far.
Who should skip it: Skip it if you have to carry it any distance; this is a leave-it-in-place unit.
4. oupes Mega 3
84/100Why it is here: Best for home backup — weighted score over switchover time, output-to-capacity ratio and capacity
What you accept
- No published noise figure, which matters if it will run in a bedroom or a tent.
- At 83.3 lb it is a two-person lift, not something you carry far.
Who should skip it: Skip it if you have to carry it any distance; this is a leave-it-in-place unit.
5. vtoman FlashSpeed Pro 3600
84/100
Why it is here: Best for home backup — weighted score over switchover time, output-to-capacity ratio and capacity
What you accept
- No published noise figure, which matters if it will run in a bedroom or a tent.
- At 83.8 lb it is a two-person lift, not something you carry far.
Who should skip it: Skip it if you have to carry it any distance; this is a leave-it-in-place unit.
6. allpowers R3500
83/100
Why it is here: Best for home backup — weighted score over switchover time, output-to-capacity ratio and capacity
What you accept
- No published noise figure, which matters if it will run in a bedroom or a tent.
- At 93.0 lb it is a two-person lift, not something you carry far.
Who should skip it: Skip it if you have to carry it any distance; this is a leave-it-in-place unit.
Buying guide
What a battery can and cannot back up
A power station is excellent at the loads people actually miss: fridge, freezer, internet router, modem, phone charging, a few lamps, a CPAP machine. It is poor at anything that heats: space heaters, electric kettles, ovens, and usually a well pump or a whole-home air conditioner.
If your outage plan includes heating or a well pump, the honest answer is a generator for that load and a station for the rest — the station rides through the seconds while the generator starts and covers the quiet overnight hours.
- Runs well: fridge, freezer, router, modem, laptops, phones, lights, CPAP, TV.
- Marginal: microwave, coffee maker, sump pump — check the surge rating.
- Not realistic: space heating, ovens, whole-home air conditioning.
UPS switchover is the spec nobody checks
A station with a published UPS switchover time under about 20 ms behaves like an uninterruptible power supply: a desktop, a router or a modem keeps running through the transfer. Units without a published figure may still work, but we cannot tell you they will — and the trade-offs on each entry above say when that figure is missing.
Runtime: do the arithmetic twice
Runtime is capacity divided by load, with losses. Assume roughly 85% inverter efficiency and about 90% usable depth of discharge, so a 1,000 Wh station delivers roughly 765 Wh of usable AC energy. A fridge that draws 60 W while running, cycling a third of the time, averages 20 W — about 480 Wh a day, which one 1,000 Wh station covers and a 500 Wh unit does not.
Expansion beats a bigger single unit
For home backup, an expandable station plus a battery added later is usually better value than buying the largest unit up front. It lets you start with what your outage history justifies, and it means a failed battery replaces a battery rather than the whole system.
Charge it before you need it
A backup battery is only useful at full charge. Keep it topped up, exercise it a couple of times a year, and store it somewhere it will not sit at 100% in summer heat — heat plus full charge is what ages a cell fastest.
Frequently asked
Can a portable power station run a fridge during a blackout?
Yes, and it is the load most owners care about. A fridge that averages 20 W of draw uses roughly 480 Wh a day, so a 1,000 Wh station covers a day with margin. Check the surge rating starts the compressor.
How long will it keep the internet running?
A router and modem together typically draw under 30 W, so a 1,000 Wh station can run them for a very long time relative to the rest of the house. If the station publishes a sub-20 ms UPS switchover, it will also ride through the initial outage without a reboot.
Is a power station better than a generator for a blackout?
For the first day and for anything indoors, usually yes: silent, no exhaust, no fuel, instant switchover. For multi-day outages or heating loads, no — a battery cannot refuel itself. Many households end up with both.
What size power station do I need for a home blackout?
Start from the essentials you actually want to run, add their watt-hours for 24 hours, and add headroom. For most households that lands in the 1,000–2,000 Wh range, expandable if the budget allows.