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Benchwatt

Expansion batteries: which one fits your power station

Updated 506 models on the bench

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How we picked: the titles and bullet points of each extra-battery listing on Amazon US, read on November 11, 2026, and the expansion limits stated in the listings of the stations in our catalog. We don't test compatibility ourselves. Our method

Which extra battery fits which station

"Works with" repeats what each listing says. Capacity and weight are from the listing too.

Extra battery Capacity Weight Works with (per the listing) Buy
Anker SOLIX BP10001,056 Wh20 lbSOLIX C1000 Not compatible with the C1000 Gen 2.In our catalog: Anker SOLIX C1000 (2,112 Wh), Anker SOLIX C1000 + 100W Solar Panel, Anker SOLIX C1000 + 200W Solar Panel, Anker SOLIX C1000 (1,056 Wh)Check price on Amazon
Anker SOLIX BP2000 (Gen 2)2,046 Wh41.6 lbSOLIX C2000 Gen 2 only Takes a C2000 Gen 2 to 4,096Wh.In our catalog: Anker SOLIX C2000 Gen 2 (2,048 Wh), Anker SOLIX C2000 Gen 2 + 400W Solar Panel, Anker SOLIX C2000 Gen 2 + 200W Solar Panel, Anker SOLIX C2000 Gen 2 (4,096 Wh)Check price on Amazon
Anker SOLIX F3000 Expansion Battery3,072 Wh65.1 lbSOLIX F3000 series In our catalog: Anker SOLIX F3000, Anker SOLIX F3000 + 400W Solar PanelCheck price on Amazon
Bluetti B300K2,765 Wh65 lbAC200L, AC200MAX, AC300, AC500, AC200PL Check price on Amazon
Bluetti B500K5,120 Wh99.2 lbAC200L, AC200MAX, AC300, AC500, Apex 300 Up to 6 per Apex 300. This listing ships the P090A cable; another listing (B0FS759MVH) ships the CA90 cable, which works only with the Apex 300.In our catalog: Bluetti Apex 300 (2,765 Wh), Bluetti Apex 300 (5,530 Wh), Bluetti Apex 300 (7,885 Wh)Check price on Amazon
DJI Expansion Battery 20002,048 Wh36.3 lbDJI Power 1000, Power 2000 Must be used with one of them; the Power 1000 needs the latest firmware. Up to 10 stacked.Check price on Amazon
EcoFlow DELTA 3 Series Smart Extra Battery1,024 Wh27.5 lbDELTA 2, DELTA 3, DELTA 3 Plus, DELTA 3 1500 Not the DELTA 3 Classic: it has no expansion port.In our catalog: EcoFlow Delta 3 (1,024 Wh), EcoFlow Delta 3 + 220W Solar Panel, EcoFlow Delta 3 + 160W Solar Panel, EcoFlow Delta 3 Plus, EcoFlow Delta 3 Plus + 220W Solar Panel, EcoFlow Delta 3 (2,048 Wh), EcoFlow Delta 3 + 200W Solar PanelCheck price on Amazon
EcoFlow DELTA 3 Max Plus Extra Battery2,048 Wh35 lbDELTA 3 Max Plus, DELTA 3 Ultra Plus In our catalog: EcoFlow Delta 3 Ultra Plus, EcoFlow Delta 3 Max PlusCheck price on Amazon
EcoFlow DELTA Pro Ultra Smart Extra Battery6,144 Wh111.8 lbDELTA Pro Ultra, DELTA Pro Ultra X Check price on Amazon
EcoFlow RIVER 3 Plus Extra Battery286 Wh12 lbRIVER 3 Plus Takes it from 286Wh to 572Wh; attaches by pogo pins, no cable.Check price on Amazon
Jackery Battery Pack 2000 Plus2,042 Wh41.8 lbExplorer 2000 Plus Up to 5 per Explorer 2000 Plus (12kWh). It can also charge on its own from solar or a car outlet.In our catalog: Jackery Explorer 2000 Plus + 200W Solar PanelCheck price on Amazon
OUPES B22,048 Wh41.8 lbMega 1, Mega 2, Mega 3 Up to 2 on a Mega 1 (5,120Wh), 6 on a Mega 2 or Mega 3.In our catalog: OUPES Mega 1Check price on Amazon
OUPES G54,608 Wh80 lbGuardian 6000 Check price on Amazon
VTOMAN FlashSpeed 1500 Extra Battery1,548 Wh27.9 lbFlashSpeed 600, 1000, 1500 Cannot be used alone.Check price on Amazon
AFERIY P310 Expansion Battery3,840 Wh88 lbAFERIY P310 (3,840Wh) only Cannot be used alone.Check price on Amazon
ABOK Ark3600 Extra Battery3,840 Wh92 lbArk3600 In our catalog: ABOK Ark3600 + 400W Solar Panel, ABOK Ark3600Check price on Amazon
ABOK Ark1800E / X11,024 Wh—Ark1800 Up to 5,120Wh in total.Check price on Amazon

How far each station expands

66 power stations and kits in our catalog say they take an extra battery. These 28 power stations also state the most they reach with them, smallest to largest:

Model CapacityOutputCellsWeightWh/lbExpands to× ownAmazon link
Jackery 1024Wh1,024 Wh800 WLiFePO4——2,048 Wh2.0×Check price on Amazon
VTOMAN Jump 1500X828 Wh1,500 WLiFePO437.4 lb222,376 Wh2.9×Check price on Amazon
ABOK 1536Wh1,536 Wh2,000 WLiFePO439.7 lb393,072 Wh2.0×Check price on Amazon
EcoFlow Delta 3 (1,024 Wh)1,024 Wh1,800 WLiFePO427.5 lb375,000 Wh4.9×Check price on Amazon
OUPES Mega 11,024 Wh2,000 WLiFePO427.8 lb375,000 Wh4.9×Check price on Amazon
AFERIY Solar Generator 18001,024 Wh1,800 WLiFePO428 lb375,120 Wh5.0×Check price on Amazon
AFERIY AF-P180PRO1,024 Wh1,800 WLiFePO4——5,120 Wh5.0×Check price on Amazon
Growatt INFINITY 2000 PRO2,048 Wh2,400 WLiFePO426 lb796,144 Wh3.0×Check price on Amazon
ABOK Ark25002,160 Wh2,500 WLiFePO446.7 lb4610,800 Wh5.0×Check price on Amazon
Jackery Solar Generator 1000 Plus1,024 Wh1,800 WLiFePO4——11,000 Wh10.7×Check price on Amazon
EcoFlow Delta 3 Ultra Plus3,072 Wh3,600 WLiFePO474 lb4211,000 Wh3.6×Check price on Amazon
Jackery Homepower 1000 Plus1,024 Wh1,800 WLiFePO423.8 lb4311,000 Wh10.7×Check price on Amazon
ABOK Ark36003,840 Wh3,600 WLiFePO492 lb4211,520 Wh3.0×Check price on Amazon
ABOK 3840Wh3,840 Wh3,600 WLiFePO492 lb4211,520 Wh3.0×Check price on Amazon
FOSSiBOT F36003,840 Wh3,600 WLiFePO449 lb7811,520 Wh3.0×Check price on Amazon
Jackery Homepower 2000 Plus2,048 Wh2,400 WLiFePO440.6 lb5012,000 Wh5.9×Check price on Amazon
Growatt HELIOS 36003,600 Wh3,600 WLiFePO451 lb7118,000 Wh5.0×Check price on Amazon
Anker SOLIX F30003,072 Wh6,000 WLiFePO491.5 lb3424,000 Wh7.8×Check price on Amazon
EcoFlow Delta Pro3,600 Wh3,600 WLiFePO499 lb3625,000 Wh6.9×Check price on Amazon
Anker SOLIX F38003,840 Wh6,000 WLiFePO4135.6 lb2826,900 Wh7.0×Check price on Amazon
Anker SOLIX S50005,024 Wh4,500 WLiFePO497 lb5230,000 Wh6.0×Check price on Amazon
EcoFlow TTC5,017 Wh4,000 WLiFePO4102.5 lb4930,000 Wh6.0×Check price on Amazon
EcoFlow TT-SC5,017 Wh7,200 WLiFePO4119 lb4230,000 Wh6.0×Check price on Amazon
EcoFlow TTP-SC5,017 Wh7,200 WLiFePO4121.3 lb4130,000 Wh6.0×Check price on Amazon
Jackery Homepower 36003,584 Wh2,000 WLiFePO474 lb4843,000 Wh12.0×Check price on Amazon
EcoFlow Delta Pro 34,096 Wh4,000 WLiFePO4115 lb3648,000 Wh11.7×Check price on Amazon
OSCAL PowerMax 60003,600 Wh6,000 WLiFePO4100.1 lb3657,600 Wh16.0×Check price on Amazon
EcoVolt PowerMax 60003,600 Wh6,000 WLiFePO4101 lb3657,600 Wh16.0×Check price on Amazon

An extra battery or a bigger station?

Per pound, an extra battery is close to a station: the batteries above have a median of 49 Wh/lb, against 44 Wh/lb for the power stations of 2,000 Wh and up in our catalog. The gain is flexibility: you buy capacity later, and the weight comes in two pieces you can carry separately. What it doesn't add is output: if you need more watts at once (a microwave and a kettle together, an RV air conditioner), you need a station rated for it, not more battery.

Before you buy

  • Exact model. Generations matter: the DELTA 3 Series battery fits the DELTA 3 Plus but not the DELTA 3 Classic; the BP2000 (Gen 2) is for the C2000 Gen 2 only.
  • Cable. The same battery can ship with different cables: one Bluetti B500K listing includes the P090A cable, another the CA90, which works only with the Apex 300.
  • Firmware. DJI says the Power 1000 needs its latest firmware to use the Expansion Battery 2000.
  • How many. Limits differ: up to 2 OUPES B2 on a Mega 1 but 6 on a Mega 2 or 3; up to 6 Bluetti B500K per Apex 300; up to 5 Jackery 2000 Plus packs per Explorer 2000 Plus.
  • Charging time. More battery on the same charger takes longer to fill. Check the station's AC and solar input.

Planning a large setup? See solar generator for an RV and the home-backup class.

Questions people ask

Can I use an EcoFlow extra battery with another brand's power station?

None of the 17 extra-battery listings we read names a station from another brand; each lists models of its own maker, and some only one model. Treat an extra battery as working only with the stations its listing names.

Can an expansion battery be used on its own?

Usually not as a power source. DJI Expansion Battery 2000, VTOMAN FlashSpeed 1500 Extra Battery, AFERIY P310 Expansion Battery say outright that they must be connected to a station. The Jackery Battery Pack 2000 Plus listing says it can be charged on its own from solar or a car outlet, which is charging, not running devices.

Does an extra battery increase the output of a power station?

It adds watt-hours, so the station runs longer. The AC watts you can draw at once are still set by the station's inverter and its rated output.

Is there an extra battery for the original EcoFlow DELTA Pro or the DELTA Pro 3?

Both are expandable per their listings, but we didn't find their extra batteries among the Amazon US listings we read on November 11, 2026. Check EcoFlow's own compatibility list for those models.