Best Power Station with Generator Charging
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Top picks at a glance
Best 2,048 Wh generator boxEcoFlow DELTA 3 MaxCheck price on Amazon
Best 2 kWh Smart Generator boxEcoFlow DELTA 2 MaxCheck price on Amazon
Best 50-minute generator boxJackery HomePower 1000 Plus v2Check price on Amazon
When the grid is down and the sun is gone, a gas generator can refill a station, and the EcoFlow DELTA 3 Max takes that charge with 2,048 Wh and 2,400 W. The EcoFlow DELTA 2 Max takes a generator charge too, with 2,048 Wh. The Jackery HomePower 1000 Plus v2 takes one as well, with 1,024 Wh.
This guide weighs the three stations on the makers’ published specs, current in November 2026. PowerPicked Editorial has not put any of the three stations through its own tests.
Stored energy is measured in watt-hours, written Wh. Power is measured in watts. One watt is written W. AC output is the plug-in power for the outage. Solar input sets the panel power a station takes.
EcoFlow DELTA 3 Max
- Capacity
- 2,048 Wh
- AC output
- 2,400 W
- Solar input
- 500 W
- Weight
- 44.7 lb
Who it's for: Home backup buyers who want 2 kWh with 20 A outlets in a quiet box.
Strengths
- 2,048 Wh with 2,400 W output
- 25 dB at 600 W (maker's test)
- Under 10 ms UPS switchover
Weaknesses
- Solar input only 500 W for a 2 kWh battery
- 0-80% takes 68 minutes on AC
- Heavy at 44.7 lb
How long does the DELTA 3 Max run?
Count the runtime numbers here from 85% of the listed capacity, assumed. 1,740.8 Wh is the usable figure, at 85% of 2,048 Wh. A 100 W load draws for about 17.4 hours on that amount. 2,048 Wh over 44.7 lb works out to about 45.8 Wh per pound.
It also charges from a generator. UPS switchover runs under 10 ms. At 600 W, noise stays at 25 dB or less, measured at 1 m. X-Boost runs devices up to 3,400 W. Car charging takes it to 80% in 3.41 hours. Read the DELTA 3 Max review.
EcoFlow DELTA 2 Max
- Capacity
- 2,048 Wh
- AC output
- 2,400 W
- Solar input
- 1,000 W
- Weight
- 50 lb
Who it's for: Home backup and RV owners who want about 2 kWh now and room to grow to 6 kWh with extra batteries.
Strengths
- Expands to 6,144 Wh with two extra batteries
- 1,000 W solar input across two ports
- 2,400 W output, 3,400 W with X-Boost
Weaknesses
- Heavy at 50 lb
- UPS switchover time isn't listed
How long does the DELTA 2 Max last?
For the runtime numbers here, work from 85% of the listed capacity, assumed. The usable figure is 1,740.8 Wh, at 85% of 2,048 Wh. A 100 W load gets 17.4 hours out of that amount. Each pound carries about 41.0 Wh: 2,048 Wh over 50 lb.
It works with the EcoFlow Smart Generator. It reaches 6,144 Wh with two extra batteries. Solar input reaches 1,000 W across two ports. Surge output is 4,800 W. UPS switchover time is not listed. Read the DELTA 2 Max review.
Jackery HomePower 1000 Plus v2
- Capacity
- 1,024 Wh
- AC output
- 1,800 W
- Solar input
- 400 W
- Weight
- 23.8 lb
Who it's for: Buyers who want about 1 kWh now, light enough to carry one-handed, with room to add batteries later.
Strengths
- Expands to about 11 kWh with Battery Pack 2000 Plus v2 units
- Full AC charge in about 50 minutes
- Rated for 6,000 cycles
Weaknesses
- Solar input tops out at 400 W
- Works only with the Battery Pack 2000 Plus v2, not older Jackery packs
How long does the HomePower 1000 Plus v2 run?
Work the runtime numbers here from 85% of the listed capacity, assumed. 870.4 Wh is the usable figure, at 85% of 1,024 Wh. A 100 W load draws for about 8.7 hours on that energy. Each pound holds about 43.0 Wh: 1,024 Wh over 23.8 lb.
On a gas generator, a full charge takes about 50 minutes. The Battery Pack 2000 Plus v2 is the only pack that works with it. It is rated for 6,000 cycles. UPS switches in under 10 ms. In Silent Mode, noise stays under 30 dB. Read the HomePower 1000 Plus v2 review.
How do the three compare?
| DELTA 3 Max | DELTA 2 Max | HomePower 1000 Plus v2 | |
|---|---|---|---|
| Capacity | 2,048 Wh | 2,048 Wh | 1,024 Wh |
| AC output | 2,400 W | 2,400 W | 1,800 W |
| Solar input | 500 W | 1,000 W | 400 W |
| Weight | 44.7 lb | 50 lb | 23.8 lb |
| UPS | under 10 ms | not listed | under 10 ms |
How to choose
Start with the output your outage needs. Capacity decides how long the backup lasts before a refill. A generator refill suits a long outage. Expansion suits a house that grows its bank.
FAQ
Which one charges from a generator?
All three. The DELTA 3 Max, the DELTA 2 Max, and the HomePower 1000 Plus v2 each list generator charging.
Which one fills fastest on a generator?
The Jackery HomePower 1000 Plus v2, in about 50 minutes on a 1,600 W gas generator.
Which one holds the biggest battery?
The DELTA 3 Max and the DELTA 2 Max tie at 2,048 Wh. The HomePower 1000 Plus v2 holds 1,024 Wh.
Which one is lightest here?
The HomePower 1000 Plus v2, at 23.8 lb. The DELTA 3 Max weighs 44.7 lb, and the DELTA 2 Max weighs 50 lb.
Sources
- EcoFlow: DELTA 3 Max product page
- EcoFlow: DELTA 2 Max product page
- Jackery: HomePower 1000 Plus v2 product page
