Portable Power Stations: what Claude and GPT would buy

Two AI models chose on their own, with no web access. Nobody tested these products: this is what each one says, and how to check it.

Claude and GPT choose the same product: EcoFlow DELTA 2

In Patio, Lawn & Garden, Claude and GPT choose the same brand in 22 of 55 categories.

Claude Opus 5.5 · October 29, 2026

EcoFlow DELTA 2

It pairs a LiFePO4 battery of about 1 kWh with an inverter strong enough for most kitchen and power-tool loads, fast AC recharging, solar input and an expansion battery port, which covers more use cases than any other single unit.

Not for: Backpackers and anyone who only charges phones and laptops, since it is heavy and oversized for that, and homeowners who want to run well pumps or central appliances through a transfer switch.

GPT 6.1 Sol · November 10, 2026

EcoFlow DELTA 2

A balanced choice with a 1,024Wh LiFePO4 battery, 1,800W AC output, fast charging, and expandable capacity.

Not for: Whole-home backup, extended outages without recharging, or loads exceeding its output.

Which one fits you

light camping and device charging

EcoFlow RIVER 2 (line)

These are small, light LiFePO4 units that recharge quickly from the wall and are enough for laptops, CPAP machines, lights and phones over a weekend.

Not for: Anyone running a fridge, microwave, coffee maker or power tools.

whole-home backup with transfer switch

Anker SOLIX F3800 (line)

It offers multi-kWh expandable capacity and 120/240V split-phase output, so it can feed a home panel through a transfer switch and run larger 240V loads.

Not for: Renters, campers or anyone who needs to carry it, since it is a wheeled, heavy, stationary-class unit.

mid-size alternative with strong solar input

Jackery Explorer Plus (line)

These are LiFePO4 units with simple controls, a strong ecosystem of matching solar panels and expansion batteries, and good build quality.

Not for: Buyers who want app-heavy customization or the fastest possible AC recharge.

budget LiFePO4 around 1 kWh

Bluetti AC180 (line)

It provides LiFePO4 chemistry and a capable inverter at a lower tier than the big names, with fast wall charging.

Not for: Anyone who needs battery expansion or 240V output.

Check before you buy

Battery chemistry. Prefer LiFePO4 (LFP), typically rated for about 3000 or more cycles to 80% capacity, over NMC, typically rated for about 500 to 800 cycles. LFP lasts several times longer, tolerates being stored full better and is thermally safer, which matters for a unit kept for emergencies.
Capacity versus your load. To estimate runtime, multiply the rated Wh by about 0.85 to allow for inverter losses, then divide by your device's actual watts. Capacity is the real measure of runtime. A 1 kWh unit runs a typical fridge roughly half a day to a day, not several days.Advertised: 1 kWh (EcoFlow)
Continuous vs surge AC output. Continuous inverter watts must exceed your largest single load. Motors and compressors (fridges, pumps) need surge headroom, often two to three times their running watts. Marketing often leads with peak or 'lifting' watts, which only apply to resistive loads and do not reflect what the inverter can actually sustain.Advertised: 1800 W (EcoFlow)
Pure sine wave inverter. The AC output should be pure sine wave. Reject modified sine wave. CPAPs, motors, chargers and sensitive electronics can run hot, buzz or fail on modified sine wave.
UPS/pass-through switchover. For desktop PCs or CPAPs used as backup, look for a stated switchover time in the low tens of milliseconds or less, and treat units without a stated UPS/EPS spec as non-UPS. Slow switchover reboots computers when the grid drops, which defeats the purpose of the backup.
Solar input and expandability. Check maximum solar watts and the allowed voltage range against your panels. Check whether add-on batteries are supported if your needs may grow. Solar input and expansion determine whether the unit can sustain a multi-day outage or only buys a few hours.Advertised: 500 W solar input (EcoFlow)

Specifications · 4 items

Charge time: 0-80% in 50 min
Alternator charge: 800 W
Solar recharge: 3-6 h
Peak output: 2200 W (X-Boost)

Taken from the pages of EcoFlow on November 11, 2026, not checked.

Where to find EcoFlow DELTA 2

EcoFlow
The Home Depot
Lowe's

Also seen on Amazon.

Shops seen in search results on November 11, 2026. A shop missing here may sell it too. Nothing was checked by a person.

Brands that matter

EcoFlow: Has the broadest lineup, from the small RIVER units to the DELTA Pro, with fast charging and a mature app.
Jackery: Known for simple, well-built units. The Plus models moved to LiFePO4 and support expansion.
Anker SOLIX: Strong LiFePO4 lineup, including the 240V-capable F3800 for home backup.
Bluetti: Offers LiFePO4 at many sizes, with value-oriented and modular expandable systems.
Goal Zero: The Yeti line is long established and rugged, but many older models use NMC chemistry.

What to avoid

NMC-chemistry units bought for emergency storage, since they have shorter cycle life and degrade when kept full.
Modified sine wave inverters.
Listings that lead with 'peak' or 'surge' watts and bury the continuous rating.
Generic 'power banks' rated only in mAh with no Wh figure or inverter spec.
Running high-wattage heaters, space heaters or AC units off a 1 kWh-class station, since they drain it in well under an hour.

Questions

Can I take a portable power station on a plane?

Almost never. Airline lithium rules cap carry-on batteries at 100 Wh, or up to 160 Wh with airline approval, and nearly all power stations exceed that.

Power station or gas generator?

A power station is silent, fume-free and safe indoors, but it holds a fixed amount of energy. A generator runs as long as it has fuel, but must be used outdoors. For long outages, pair a station with solar or choose a generator.

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