Backup Rank

Best Power Stations for a Space Heater

The best power stations for running a space heater in a winter outage, ranked by capacity, price per Wh and warranty, with hours on one charge.

Prices checked

Top picks

The quick answer from the 48-model ranking below.

Ranking

48 models, best first. Each bar compares a model with the rest of this list: the best on every point would score 100.

Scores reward a low price per watt-hour, high output, room to expand and long warranties, all as the makers state them. They don't measure real-world efficiency, noise or app quality, so use them to shortlist, then read the model pages.

  1. Rank 1

    Anker SOLIX

    S5000

    Battery capacity
    5,024 Wh
    AC output
    4,500 W
    Max with extra batteries
    30,000 Wh
    AC voltage
    120V and 240V

    Runs a portable heater: about 2.7 hours on one charge.

    Why it's here: Top 3 of 48 for battery capacity (5,024 Wh) and the best warranty of these 48 (5 years).

    Score88out of 100

    • Battery capacity5,024 Wh49.1 of 50 points
    • Price per Wh$0.50 / Wh19.1 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Anker SOLIX US, from $2,499.99checked

    Check price
  2. Rank 2

    BLUETTI

    Elite 400

    Battery capacity
    3,840 Wh
    AC output
    2,600 W
    AC voltage
    120V only

    Runs a portable heater: about 2 hours on one charge.

    Why it's here: Top 3 of 48 for battery capacity (3,840 Wh) and the best warranty of these 48 (5 years).

    Score82out of 100

    • Battery capacity3,840 Wh37.5 of 50 points
    • Price per Wh$0.39 / Wh24.4 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    From $1,499checked

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  3. Rank 3

    Oukitel

    BP5000 Pro Max

    Battery capacity
    5,120 Wh
    AC output
    5,000 W
    Max with extra batteries
    19,456 Wh
    AC voltage
    120V and 240V

    Runs a portable heater: about 2.7 hours on one charge.

    Why it's here: The best battery capacity of these 48 (5,120 Wh).

    Score80out of 100

    • Battery capacity5,120 Wh50 of 50 points
    • Price per Wh$0.37 / Wh25.6 of 30 points
    • Warranty1 year4 of 20 points

    Longer bar = better for you

    At Oukitel Power US, from $1,899checked

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  4. Rank 4

    Dabbsson

    3000L

    Battery capacity
    3,072 Wh
    AC output
    3,000 W
    AC voltage
    120V only

    Runs a portable heater: about 1.6 hours on one charge.

    Score79out of 100

    • Battery capacity3,072 Wh30 of 50 points
    • Price per Wh$0.33 / Wh29.2 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Dabbsson US, from $999checked

    Check price
  5. Rank 5

    Dabbsson

    DBS3500

    Battery capacity
    3,430 Wh
    AC output
    3,600 W
    AC voltage
    120V only

    Runs a portable heater: about 1.8 hours on one charge.

    Score74out of 100

    • Battery capacity3,430 Wh33.5 of 50 points
    • Price per Wh$0.47 / Wh20.4 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Dabbsson US, from $1,599checked

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  6. Rank 6

    BLUETTI

    Elite 300

    Battery capacity
    3,014.4 Wh
    AC output
    2,400 W
    AC voltage
    120V only

    Runs a portable heater: about 1.6 hours on one charge.

    Score73out of 100

    • Battery capacity3,014.4 Wh29.4 of 50 points
    • Price per Wh$0.40 / Wh23.9 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    From $1,199checked

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  7. Rank 7

    Dabbsson

    2000L

    Battery capacity
    2,048 Wh
    AC output
    2,200 W
    AC voltage
    120V only

    Runs a portable heater: about 1.1 hours on one charge.

    Score70out of 100

    • Battery capacity2,048 Wh20 of 50 points
    • Price per Wh$0.32 / Wh30 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Dabbsson US, from $649checked

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  8. Rank 8

    Jackery

    HomePower 3000

    Battery capacity
    3,072 Wh
    AC output
    3,600 W
    AC voltage
    120V only
    Cycle life
    4,000 cycles
    Home panel or transfer switch
    Yes
    Weight
    59.5 lb

    Runs a portable heater: about 1.6 hours on one charge.

    Score69out of 100

    • Battery capacity3,072 Wh30 of 50 points
    • Price per Wh$0.49 / Wh19.5 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Jackery US, from $1,499checked

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  9. Rank 9

    Tied for 9 · Dabbsson

    DBS2300

    Battery capacity
    2,330 Wh
    AC output
    2,200 W
    AC voltage
    120V only
    Max solar input
    600 W
    AC outlets
    5
    Weight
    53 lb

    Runs a portable heater: about 1.2 hours on one charge.

    Score67out of 100

    • Battery capacity2,330 Wh22.8 of 50 points
    • Price per Wh$0.39 / Wh24.6 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Dabbsson US, from $899checked

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  10. Rank 9

    Tied for 9 · Dabbsson

    DBS2300 Plus

    Battery capacity
    2,330 Wh
    AC output
    2,200 W
    AC voltage
    120V only
    Max solar input
    800 W
    AC outlets
    4
    Weight
    58.1 lb

    Runs a portable heater: about 1.2 hours on one charge.

    Score67out of 100

    • Battery capacity2,330 Wh22.8 of 50 points
    • Price per Wh$0.39 / Wh24.6 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Dabbsson US, from $899checked

    Check price
Show all 48
  1. Rank 9

    Tied for 9 · Anker SOLIX

    F3000

    Battery capacity
    3,072 Wh
    AC output
    3,600 W
    Max with extra batteries
    12,288 Wh
    AC voltage
    120V only

    Runs a portable heater: about 1.6 hours on one charge.

    Score67out of 100

    • Battery capacity3,072 Wh30 of 50 points
    • Price per Wh$0.55 / Wh17.2 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Anker SOLIX US, from $1,699.99checked

    Check price
  2. Rank 9

    Tied for 9 · BLUETTI

    Apex 200

    Battery capacity
    2,560 Wh
    AC output
    3,200 W
    AC voltage
    120V and 240V

    Runs a portable heater: about 1.4 hours on one charge.

    Score67out of 100

    • Battery capacity2,560 Wh25 of 50 points
    • Price per Wh$0.43 / Wh22.1 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    From $1,099checked

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  3. Rank 9

    Tied for 9 · Dabbsson

    DBS2100 Pro

    Battery capacity
    2,150 Wh
    AC output
    2,400 W
    AC voltage
    120V only

    Runs a portable heater: about 1.1 hours on one charge.

    Score67out of 100

    • Battery capacity2,150 Wh21 of 50 points
    • Price per Wh$0.37 / Wh25.6 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Dabbsson US, from $799checked

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  4. Rank 14

    Anker SOLIX

    S2000

    Battery capacity
    2,010 Wh
    AC output
    1,500 W
    Max with extra batteries
    2,010 Wh

    Runs a portable heater: about 1.1 hours on one charge.

    Score66out of 100

    • Battery capacity2,010 Wh19.6 of 50 points
    • Price per Wh$0.36 / Wh26.2 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Anker SOLIX US, from $729.99checked

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  5. Rank 15

    Tied for 15 · EcoFlow

    DELTA 3800 Gen4

    Battery capacity
    3,763 Wh
    AC output
    3,600 W
    Max with extra batteries
    12,000 Wh
    AC voltage
    120V only

    Runs a portable heater: about 2 hours on one charge.

    Score65out of 100

    • Battery capacity3,763 Wh36.7 of 50 points
    • Price per Wh$0.58 / Wh16.3 of 30 points
    • Warranty3 years12 of 20 points

    Longer bar = better for you

    At EcoFlow US, from $2,199checked

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  6. Rank 15

    Tied for 15 · BLUETTI

    Apex 300

    Battery capacity
    2,764.8 Wh
    AC output
    3,840 W
    AC voltage
    120V and 240V

    Runs a portable heater: about 1.5 hours on one charge.

    Score65out of 100

    • Battery capacity2,764.8 Wh27 of 50 points
    • Price per Wh$0.54 / Wh17.5 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    From $1,499checked

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  7. Rank 17

    Tied for 17 · EcoFlow

    DELTA 3 Ultra

    Battery capacity
    3,072 Wh
    AC output
    3,600 W
    Max with extra batteries
    3,072 Wh
    AC voltage
    120V only

    Runs a portable heater: about 1.6 hours on one charge.

    Score64out of 100

    • Battery capacity3,072 Wh30 of 50 points
    • Price per Wh$0.42 / Wh22.5 of 30 points
    • Warranty3 years12 of 20 points

    Longer bar = better for you

    At EcoFlow US, from $1,299checked

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  8. Rank 17

    Tied for 17 · ALLPOWERS

    R3500

    Battery capacity
    3,168 Wh
    AC output
    3,200 W
    AC voltage
    120V only

    Runs a portable heater: about 1.7 hours on one charge.

    Score64out of 100

    • Battery capacity3,168 Wh30.9 of 50 points
    • Price per Wh$0.38 / Wh25.1 of 30 points
    • Warranty2 years8 of 20 points

    Longer bar = better for you

    From $1,199checked

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  9. Rank 19

    BLUETTI

    Elite 200 V2

    Battery capacity
    2,073.6 Wh
    AC output
    2,600 W
    Max with extra batteries
    2,073.6 Wh
    AC voltage
    120V only

    Runs a portable heater: about 1.1 hours on one charge.

    Score62out of 100

    • Battery capacity2,073.6 Wh20.2 of 50 points
    • Price per Wh$0.43 / Wh21.9 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    From $899checked

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  10. Rank 20

    EcoFlow

    DELTA 3 Ultra Plus

    Battery capacity
    3,072 Wh
    AC output
    3,600 W
    Max with extra batteries
    11,000 Wh
    AC voltage
    120V only

    Runs a portable heater: about 1.6 hours on one charge.

    Score60out of 100

    • Battery capacity3,072 Wh30 of 50 points
    • Price per Wh$0.52 / Wh18.3 of 30 points
    • Warranty3 years12 of 20 points

    Longer bar = better for you

    At EcoFlow US, from $1,599checked

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  11. Rank 21

    Tied for 21 · Anker SOLIX

    C2000 Gen 2

    Battery capacity
    2,048 Wh
    AC output
    2,400 W
    Max with extra batteries
    4,096 Wh
    AC voltage
    120V only

    Runs a portable heater: about 1.1 hours on one charge.

    Score59out of 100

    • Battery capacity2,048 Wh20 of 50 points
    • Price per Wh$0.49 / Wh19.5 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Anker SOLIX US, from $999.99checked

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  12. Rank 21

    Tied for 21 · Jackery

    Explorer 2000 v2

    Battery capacity
    2,042 Wh
    AC output
    2,200 W
    AC voltage
    120V only

    Runs a portable heater: about 1.1 hours on one charge.

    Score59out of 100

    • Battery capacity2,042 Wh19.9 of 50 points
    • Price per Wh$0.49 / Wh19.4 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Jackery US, from $999checked

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  13. Rank 21

    Tied for 21 · Anker SOLIX

    F1500

    Battery capacity
    1,536 Wh
    AC output
    1,800 W
    Max with extra batteries
    1,536 Wh
    AC voltage
    120V only

    Runs a portable heater: about 0.8 hours on one charge.

    Score59out of 100

    • Battery capacity1,536 Wh15 of 50 points
    • Price per Wh$0.39 / Wh24.3 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Anker SOLIX US, from $599.99checked

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  14. Rank 21

    Tied for 21 · EcoFlow

    DELTA 3000 Gen4

    Battery capacity
    3,072 Wh
    AC output
    3,600 W
    AC voltage
    120V only
    Cycle life
    6,000 cycles
    Wall charging
    1,800 W
    UPS switchover
    10 ms

    Runs a portable heater: about 1.6 hours on one charge.

    Score59out of 100

    • Battery capacity3,072 Wh30 of 50 points
    • Price per Wh$0.55 / Wh17.2 of 30 points
    • Warranty3 years12 of 20 points

    Longer bar = better for you

    At EcoFlow US, from $1,699checked

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  15. Rank 25

    ALLPOWERS

    R2500 V2

    Battery capacity
    1,920 Wh
    AC output
    2,500 W
    AC voltage
    120V only

    Runs a portable heater: about 1 hour on one charge.

    Score55out of 100

    • Battery capacity1,920 Wh18.8 of 50 points
    • Price per Wh$0.34 / Wh28.1 of 30 points
    • Warranty2 years8 of 20 points

    Longer bar = better for you

    From $649checked

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  16. Rank 26

    EcoFlow

    DELTA 3 Max

    Battery capacity
    2,048 Wh
    AC output
    2,400 W
    AC voltage
    120V only
    Weight
    44.8 lb
    Warranty
    3 years

    Runs a portable heater: about 1.1 hours on one charge.

    Score54out of 100

    • Battery capacity2,048 Wh20 of 50 points
    • Price per Wh$0.43 / Wh22.2 of 30 points
    • Warranty3 years12 of 20 points

    Longer bar = better for you

    At EcoFlow US, from $879checked

    Check price
  17. Rank 27

    Tied for 27 · BLUETTI

    AC180

    Battery capacity
    1,152 Wh
    AC output
    1,800 W
    AC voltage
    120V only
    Surge output
    2,700 W
    Max solar input
    500 W
    Wall charging
    1,440 W

    Runs a portable heater: about 0.6 hours on one charge.

    Score53out of 100

    • Battery capacity1,152 Wh11.2 of 50 points
    • Price per Wh$0.43 / Wh21.9 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    From $499checked

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  18. Rank 27

    Tied for 27 · Dabbsson

    DBS1400 Pro

    Battery capacity
    1,382 Wh
    AC output
    2,400 W
    AC voltage
    120V only

    Runs a portable heater: about 0.7 hours on one charge.

    Score53out of 100

    • Battery capacity1,382 Wh13.5 of 50 points
    • Price per Wh$0.49 / Wh19.3 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Dabbsson US, from $679checked

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  19. Rank 29

    Tied for 29 · Jackery

    Explorer 1500 v2

    Battery capacity
    1,536 Wh
    AC output
    2,000 W
    AC voltage
    120V only

    Runs a portable heater: about 0.8 hours on one charge.

    Score52out of 100

    • Battery capacity1,536 Wh15 of 50 points
    • Price per Wh$0.55 / Wh17.2 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Jackery US, from $849checked

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  20. Rank 29

    Tied for 29 · Jackery

    Explorer 1000 Plus

    Battery capacity
    1,264 Wh
    AC output
    2,000 W
    Max with extra batteries
    5,000 Wh
    AC voltage
    120V only

    Runs a portable heater: about 0.7 hours on one charge.

    Score52out of 100

    • Battery capacity1,264 Wh12.3 of 50 points
    • Price per Wh$0.49 / Wh19.4 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Jackery US, from $619checked

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  21. Rank 31

    Oukitel

    P2001 Plus

    Battery capacity
    2,048 Wh
    AC output
    2,400 W
    AC voltage
    120V only
    Cycle life
    3,500 cycles
    Weight
    48.5 lb
    Warranty
    1 year

    Runs a portable heater: about 1.1 hours on one charge.

    Score51out of 100

    • Battery capacity2,048 Wh20 of 50 points
    • Price per Wh$0.36 / Wh26.7 of 30 points
    • Warranty1 year4 of 20 points

    Longer bar = better for you

    At Oukitel Power US, from $729checked

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  22. Rank 32

    Tied for 32 · Anker SOLIX

    C1000X

    Battery capacity
    1,056 Wh
    AC output
    1,800 W
    Max with extra batteries
    2,112 Wh

    Runs a portable heater: about 0.6 hours on one charge.

    Score50out of 100

    • Battery capacity1,056 Wh10.3 of 50 points
    • Price per Wh$0.47 / Wh20.1 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Anker SOLIX US, from $499.99checked

    Check price
  23. Rank 32

    Tied for 32 · BLUETTI

    Elite 100 V2

    Battery capacity
    1,024 Wh
    AC output
    1,800 W
    AC voltage
    120V only
    Cycle life
    4,000 cycles
    Max solar input
    1,000 W
    Wall charging
    1,200 W

    Runs a portable heater: about 0.5 hours on one charge.

    Score50out of 100

    • Battery capacity1,024 Wh10 of 50 points
    • Price per Wh$0.49 / Wh19.5 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    From $499checked

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  24. Rank 34

    Tied for 34 · EcoFlow

    DELTA 3 Max Plus

    Battery capacity
    2,048 Wh
    AC output
    3,000 W
    Max with extra batteries
    10,000 Wh
    AC voltage
    120V only

    Runs a portable heater: about 1.1 hours on one charge.

    Score49out of 100

    • Battery capacity2,048 Wh20 of 50 points
    • Price per Wh$0.56 / Wh16.9 of 30 points
    • Warranty3 years12 of 20 points

    Longer bar = better for you

    At EcoFlow US, from $1,149checked

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  25. Rank 34

    Tied for 34 · VTOMAN

    Jump 1800

    Battery capacity
    1,408 Wh
    AC output
    1,800 W
    Max with extra batteries
    2,956 Wh
    AC voltage
    120V only

    Runs a portable heater: about 0.8 hours on one charge.

    Score49out of 100

    • Battery capacity1,408 Wh13.8 of 50 points
    • Price per Wh$0.35 / Wh26.8 of 30 points
    • Warranty2 years8 of 20 points

    Longer bar = better for you

    At VTOMAN US, from $499checked

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  26. Rank 34

    Tied for 34 · Jackery

    Explorer 1500 Ultra

    Battery capacity
    1,536 Wh
    AC output
    1,800 W
    AC voltage
    120V only

    Runs a portable heater: about 0.8 hours on one charge.

    Score49out of 100

    • Battery capacity1,536 Wh15 of 50 points
    • Price per Wh$0.70 / Wh13.5 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Jackery US, from $1,079checked

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  27. Rank 37

    Anker SOLIX

    C1000 Gen 2

    Battery capacity
    1,024 Wh
    AC output
    2,000 W
    Max with extra batteries
    1,024 Wh
    AC voltage
    120V only

    Runs a portable heater: about 0.5 hours on one charge.

    Score48out of 100

    • Battery capacity1,024 Wh10 of 50 points
    • Price per Wh$0.54 / Wh17.7 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Anker SOLIX US, from $549.99checked

    Check price
  28. Rank 38

    Tied for 38 · Jackery

    HomePower 1000 v2

    Battery capacity
    1,024 Wh
    AC output
    1,500 W
    AC voltage
    120V only

    Runs a portable heater: about 0.5 hours on one charge.

    Score47out of 100

    • Battery capacity1,024 Wh10 of 50 points
    • Price per Wh$0.55 / Wh17.4 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Jackery US, from $559checked

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  29. Rank 38

    Tied for 38 · ALLPOWERS

    S2000 Pro

    Battery capacity
    1,451 Wh
    AC output
    2,400 W
    AC voltage
    120V only

    Runs a portable heater: about 0.8 hours on one charge.

    Score47out of 100

    • Battery capacity1,451 Wh14.2 of 50 points
    • Price per Wh$0.38 / Wh25.1 of 30 points
    • Warranty2 years8 of 20 points

    Longer bar = better for you

    From $549checked

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  30. Rank 38

    Tied for 38 · Oukitel

    BP3000

    Battery capacity
    2,048 Wh
    AC output
    3,200 W
    Max with extra batteries
    16,384 Wh
    AC voltage
    120V only

    Runs a portable heater: about 1.1 hours on one charge.

    Score47out of 100

    • Battery capacity2,048 Wh20 of 50 points
    • Price per Wh$0.42 / Wh22.7 of 30 points
    • Warranty1 year4 of 20 points

    Longer bar = better for you

    At Oukitel Power US, from $859checked

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  31. Rank 38

    Tied for 38 · Oukitel

    P2001 Pro

    Battery capacity
    2,048 Wh
    AC output
    3,200 W
    AC voltage
    120V only

    Runs a portable heater: about 1.1 hours on one charge.

    Score47out of 100

    • Battery capacity2,048 Wh20 of 50 points
    • Price per Wh$0.42 / Wh22.7 of 30 points
    • Warranty1 year4 of 20 points

    Longer bar = better for you

    At Oukitel Power US, from $859checked

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  32. Rank 42

    Tied for 42 · Oukitel

    BP2000 Pro

    Battery capacity
    2,048 Wh
    AC output
    3,300 W
    Max with extra batteries
    16,384 Wh

    Runs a portable heater: about 1.1 hours on one charge.

    Score46out of 100

    • Battery capacity2,048 Wh20 of 50 points
    • Price per Wh$0.43 / Wh22.2 of 30 points
    • Warranty1 year4 of 20 points

    Longer bar = better for you

    At Oukitel Power US, from $879checked

    Check price
  33. Rank 42

    Tied for 42 · Dabbsson

    DBS1000 Pro

    Battery capacity
    1,024 Wh
    AC output
    2,000 W
    AC voltage
    120V only

    Runs a portable heater: about 0.5 hours on one charge.

    Score46out of 100

    • Battery capacity1,024 Wh10 of 50 points
    • Price per Wh$0.60 / Wh15.7 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Dabbsson US, from $619checked

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  34. Rank 44

    Jackery

    HomePower 1000 Plus v2

    Battery capacity
    1,024 Wh
    AC output
    1,800 W
    Max with extra batteries
    11,000 Wh
    AC voltage
    120V only

    Runs a portable heater: about 0.5 hours on one charge.

    Score43out of 100

    • Battery capacity1,024 Wh10 of 50 points
    • Price per Wh$0.73 / Wh13 of 30 points
    • Warranty5 years20 of 20 points

    Longer bar = better for you

    At Jackery US, from $749checked

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  35. Rank 45

    EcoFlow

    DELTA 3 Classic

    Battery capacity
    1,024 Wh
    AC output
    1,800 W
    AC voltage
    120V only
    Max solar input
    500 W
    Wall charging
    1,400 W
    Weight
    26.7 lb

    Runs a portable heater: about 0.5 hours on one charge.

    Score42out of 100

    • Battery capacity1,024 Wh10 of 50 points
    • Price per Wh$0.47 / Wh20.3 of 30 points
    • Warranty3 years12 of 20 points

    Longer bar = better for you

    At EcoFlow US, from $479checked

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  36. Rank 46

    VTOMAN

    FlashSpeed 2400

    Battery capacity
    1,408 Wh
    AC output
    2,400 W
    AC voltage
    120V only

    Runs a portable heater: about 0.8 hours on one charge.

    Score41out of 100

    • Battery capacity1,408 Wh13.8 of 50 points
    • Price per Wh$0.50 / Wh19.1 of 30 points
    • Warranty2 years8 of 20 points

    Longer bar = better for you

    At VTOMAN US, from $699checked

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  37. Rank 47

    ALLPOWERS

    R1500

    Battery capacity
    1,152 Wh
    AC output
    1,800 W
    AC voltage
    120V only
    Surge output
    3,000 W
    Expandable
    Yes
    Max solar input
    650 W

    Runs a portable heater: about 0.6 hours on one charge.

    Score40out of 100

    • Battery capacity1,152 Wh11.2 of 50 points
    • Price per Wh$0.47 / Wh20.3 of 30 points
    • Warranty2 years8 of 20 points

    Longer bar = better for you

    From $539checked

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  38. Rank 48

    Oukitel

    P1000 Plus

    Battery capacity
    1,024 Wh
    AC output
    1,800 W
    AC voltage
    120V only
    Cycle life
    4,000 cycles
    Max solar input
    500 W
    Wall charging
    1,200 W

    Runs a portable heater: about 0.5 hours on one charge.

    Score37out of 100

    • Battery capacity1,024 Wh10 of 50 points
    • Price per Wh$0.41 / Wh23.2 of 30 points
    • Warranty1 year4 of 20 points

    Longer bar = better for you

    At Oukitel Power US, from $419checked

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How the score works

Weights: battery capacity 50, price per wh 30, warranty 20

Weights

  1. 50

    Battery capacity, higher is better.

  2. 30

    Price per Wh, lower is better.

  3. 20

    Warranty, higher is better.

Steps

  1. 1

    Each criterion is scored against the best of these 48 models: the best gets 1, and a model with 80% of the best value gets 0.8. For price per wh, lower is better, so the lowest value scores 1 and one 25% higher scores 0.8.

  2. 2

    Each scaled value is multiplied by its weight, and the results are added up to a score out of 100. Models with the same score share a rank.

  3. 3

    A model is ranked only if it has its own page here and a value for every criterion.

  4. 4

    Only models that can run a portable heater are ranked: 1,500 W. Hours on one charge = capacity × 0.8 (the share Jackery uses in its own runtime formula) ÷ 1,500 W.

Who is ranked

Virginia Cooperative Extension lists a portable heater at 750 to 1,500 W. We use 1,500 W, the high setting on most plug-in heaters, so a model is ranked only if its continuous output is at least 1,500 W. A heater has no motor to start, so surge output does not matter here.

How the hours are worked out

Hours on one charge are the battery capacity times 0.8, the share Jackery uses in its own runtime formula, divided by 1,500 W. Heat is the hardest load there is for a battery: even the biggest units here run a heater on high for only a few hours. On the low setting, about 750 W, the time roughly doubles. Capacity carries half the score, price per Wh 30 percent and warranty 20 percent.

How to use this list

To make a charge last, heat one small room, close its door and use the low setting. An electric blanket at about 100 W keeps one person warm for far longer than a heater. For whole-house heat, a gas furnace's blower fan uses about half the power of one heater; see the furnace list. The runtime calculator works out other mixes.