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 · UPS
Best portable power stations with UPS mode
A UPS keeps equipment alive through the moment the grid fails. In this category that capability is expressed as a switchover time, and it is the number that decides whether a desktop, router or modem reboots during a blip. This list only includes models whose vendor publishes it.
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
- The vendor publishes a UPS switchover time — no figure, no place on this list.
- Home-backup readiness, the composite this site publishes with its inputs stated.
- Switchover time shown for every entry, because a fast inverter and a big battery are different purchases.
- No claim about compatibility with specific equipment: that depends on the device’s own tolerance.
42 models in the dataset match this page’s scope, and 42 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 UPS switchover actually measures
It is the gap between losing mains power and the station supplying AC from its battery. A desktop power supply, a router or a modem rides through a gap of roughly 10–20 ms without noticing; a longer gap is a reboot, which is exactly what a UPS is bought to avoid.
A station marketed as having "UPS mode" but publishing no figure is not necessarily slow — it is simply unverified, which is why those models are not ranked here.
What it does not tell you
Switchover speed says nothing about runtime. A station with a fast transfer and a small battery keeps your router alive for an evening; a larger one keeps a fridge running for a day. Decide which job you are buying for — the two often need different units.
It also says nothing about how the station behaves under a sustained brownout, or about whether its output is a pure sine wave. Where vendors publish those details they are on the model page; where they do not, the page says so.
What a UPS station is good for
- A desktop, monitor and router through short outages and flickers.
- A modem and router through a long outage, which is the cheapest way to keep working.
- A NAS or a home server that dislikes unclean shutdowns.
- Not for heating, ovens or anything drawing kilowatts for hours.
Sizing a UPS station
Add up the continuous wattage of the equipment you want to keep alive, then decide how many hours you need. A router and modem together are usually under 30 W, so a mid-size station covers a very long outage; a desktop under load can be ten times that.
Frequently asked
What is a good UPS switchover time for a power station?
Under about 20 ms is the figure that keeps typical computer equipment running without a reboot. Faster is better, and units that publish no figure cannot be assessed.
Can any power station work as a UPS?
Many can supply power continuously while the grid is up and take over when it fails, but the transfer gap varies. This page only ranks models where the vendor publishes that figure.
Will a UPS power station keep my whole house running?
No. It keeps specific equipment alive. Whole-home backup needs a transfer switch and much more capacity, and heating loads are usually out of reach for any battery.