ALLPOWERS R3500 review

What it is and who it suits

The R3500 is a large home-backup power station that ALLPOWERS' US store lists as a 3,200 W, 3,168 Wh unit with a LiFePO4 battery rated for over 3,500 charging cycles. It suits a household that wants to keep a refrigerator, a router, lights and some power tools running through an outage without a fuel generator.

This review is researched, not tested. It relies on ALLPOWERS' US product page, Ready.gov and CDC. The page gives no UL standard number, so treat the specification table as the maker's own.

Output and the 120 V limit

ALLPOWERS lists AC output of 100V to 120V at 3,200 W, with a 6,000 W peak. The page lists no 240 V output, so it will not run a well pump, dryer or other 240 V load. Our power station vs generator guide explains the trade-offs against a fuel generator, and the refrigerator guide shows how to size one for a fridge.

Ready.gov says a refrigerator keeps food cold for about four hours and a full freezer for about 48 hours if the doors stay closed, so a backup that keeps a fridge cold is the main reason most people buy a unit this size.

UPS mode and its 1,500 W cap

ALLPOWERS lists a 15 ms uninterruptible power supply mode, described as a momentary interruption when switching. It also says the maximum output is 1,500 W in UPS mode, because an ordinary household outlet is 15 amps. That matters if you plan to leave the unit plugged into the wall as a standby: the full 3,200 W is for battery operation, and the UPS mode is capped at about half of that.

If anyone in the home relies on powered medical equipment, Ready.gov advises talking to your medical provider about a power outage plan. Our medical devices guide covers the steps. A power station is one tool in that plan, not the whole plan.

Charging, expansion and weight

AC charging is listed at 1,500 W maximum. Solar input is listed at up to 2,000 W (12 to 150 V), and ALLPOWERS says 2,000 W of solar charges it in 2.5 hours. Using AC and solar together is listed at up to 4,000 W in total. The page notes that the car charger and the solar cable are not included.

One B3000 expansion battery takes the system from 3,168 Wh to 6,336 Wh. The unit weighs 93 lb, so it is a stay-put or roll-it-short-distances unit, not something to carry up stairs. Keep it indoors or in a covered place and read our lithium battery fire safety guide.

Certification wording

The certification line reads "UL / PSE / CE / FCC / RoHS / UKCA". It names UL but gives no UL standard number or listing file and mixes in marks, such as UKCA and CE, that are not US standards. Before relying on it for a home circuit, ask ALLPOWERS which UL standard applies and check the label on the unit.

How it compares and who should skip it

Within the ALLPOWERS comparison, the R4000 holds 3,456 Wh and lists 3,600 W at 99.2 lb, a little more of everything, and the R2500 V2 holds 1,920 Wh at 63.93 lb. On our power station page, the EcoFlow DELTA 3 Max holds 2,048 Wh at 44.8 lb, so you pay in weight for the extra capacity here.

Skip it if you need 240 V, if you want something to carry, or if you want a unit with a clearly stated UL standard. For small loads, such as phones and a router, a much smaller station does the job.

Can the ALLPOWERS R3500 run a refrigerator?

Its listed 3,200 W output and 3,168 Wh capacity put it in the range people use for fridges. Check your fridge's label for its starting load, and see our refrigerator guide before you rely on it.

Why is UPS mode limited to 1,500 W?

ALLPOWERS says an ordinary household outlet is rated at 15 amps, so the maximum output is 1,500 W in UPS mode. Full output is for use on battery.

Can I add more capacity?

Yes. ALLPOWERS lists expansion with one B3000 battery, taking the system from 3,168 Wh to 6,336 Wh.

Does it work at 240 V?

The maker's page lists AC output of 100V to 120V only, so it is a 120 V unit. Choose a split-phase system if you must run a 240 V pump or dryer.