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Anker

Anker SOLIX BP3800 Expansion Battery, 3840Wh LiFePO4 Battery with 10-Year Lifespan, for SOLIX F3800 Series, for Home Use, RV, and Emergencies

  • Based on 52 reviews
Condition: New
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$1,399.00 Why this price?
Black Friday Deal · 44% off was $2,499.00

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Availability: Only 5 left in stock, order soon!
Fulfilled by AnkerDirect
Arrives Saturday, Dec 6
Order within 17 hours and 31 minutes
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Style: Anker SOLIX BP3800 Expansion Battery


Features

  • Huge Capacity Up to 26.9kWh: Anker SOLIX F3800 has 3.84kWh to power your family's needs for one day. If that's not enough, add up to six battery packs to expand capacity to 26.9kWh. That's enough power for a week.
  • Long-Lasting 10-Year Lifespan: Anker SOLIX F3800 is built to last over a decade, even with everyday use, thanks to Anker InfiniPower technology. The power station also features EV-class LFP batteries, durable components, and a smart temperature control system.
  • Peace of Mind with 5-Year Warranty: Instead of the average industry warranty length of 2 years, you can purchase Anker SOLIX F3800 Portable Power Station Expansion Battery worry-free with a 5-year full-device warranty.
  • What's in the Box: - Anker SOLIX BP3800 Expansion Battery - Battery-to-Host Cable

Brand: Anker


Wattage: 480 watts


Fuel Type: Electric


Power Source: AC


Item Weight: 83.78 Pounds


Voltage: 3.7 Volts


Output Wattage: 3840 Watts


Special Feature: Portable


Included Components: Anker SOLIX BP3800 Expansion Battery，Battery-to-Host Cable


Color: Black


Brand: ‎Anker


Wattage: ‎480 watts


Fuel Type: ‎Electric


Power Source: ‎AC


Item Weight: ‎83.78 Pounds


Voltage: ‎3.7 Volts


Output Wattage: ‎3840 Watts


Special Feature: ‎Portable


Included Components: ‎Anker SOLIX BP3800 Expansion Battery，Battery-to-Host Cable


Color: ‎Black


Product Dimensions: ‎15.43"L x 13.9"W x 10.3"H


Model Name: ‎Anker SOLIX BP3800


Engine Type: ‎Battery


Total Power Outlets: ‎8


Starting Wattage: ‎3840 Watts


Running Wattage: ‎3840 Watts


UPC: ‎194644159160


Manufacturer: ‎Anker


Part Number: ‎A1790


Item Weight: ‎83.8 pounds


Item model number: ‎A1790


Batteries: ‎1 Lithium Ion batteries required. (included)


Style: ‎Anker SOLIX BP3800 Expansion Battery


Item Package Quantity: ‎1


Special Features: ‎Portable


Batteries Included?: ‎Yes


Batteries Required?: ‎Yes


Battery Cell Type: ‎Other Than Listed


Battery Capacity: ‎1200000 Milliamp Hours


Warranty Description: ‎5 Years


Date First Available: September 6, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Dec 6

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great expansion battery for your Solix
Works exactly the way it should and has a huge capacity. Couldn't ask for a better expansion system. Adds a lot of weight once it’s on top of the unit so the unit is difficult to roll but completely understandable and necessary if you want this much capacity in a battery you’re gonna be dealing with weight. ... show more
Reviewed in the United States on September 23, 2025 by Brian Barber
    • The Anker Solix 3800 is a truly capable battery system.
We live in an area with power outages. The 3800 plus an expansion battery runs everything but the air conditioning. A tip for everyone: Get a licensed electrician to install a generator plug and switch. This allows you to use the NEMA 14-50 outlet on the Anker Solix. It also insures that you don’t send power back out to the grid and fry the repairman who’s trying to restore your power. Alternatively, you can simply plug in loads (fridge, lights, etc.) directly into the 3800. Just don’t EVER try to energize your home wiring without having an electrician set it up properly. The Anker Solix 3800 is a remarkable battery with a lot of capability, and it gets us safely thru outages with fridge, well pump, sewage lift pump, etc. fully operating. Just no air conditioning, still working on that. Good luck! ... show more
Reviewed in the United States on June 25, 2025 by Amazon Prime User
    • Peace of mind in an emergency
Bought the expansion after wanting more power storage. Now have 2 base stations and 2 expansion packs because it worked so well. Lost power during hurricanes was able to keep the essentials running for a couple days while waiting for power to be restored. Being portable was great for bringing unit to family when they needed power and considering installing sub panel for automatic backup. Recommended buying base station and expansion pack, it's worth extra money and says you buying together ... show more
Reviewed in the United States on November 1, 2024 by Robert W
    • Works as advertised. Easy plug and play addition to the Anker Solix F3800.
Works as advertised. Easy plug and play addition to the Anker Solix F3800.
Reviewed in the United States on November 2, 2025 by Clarence G.
    • Pricey but good
Great addition to your F3800 Overly expensive however
Reviewed in the United States on September 2, 2025 by David E.
    • Doubled my stand by power!
The expansion battery came very well packaged and is a high quality product! Set up took 5 minutes and the peace of mind will last much longer. Buying at black friday saved me over $800, I will be doing some serious testing in the coming weeks and report later, but as of right now I am very satisfied with my purchase and would recommend it to others! ... show more
Reviewed in the United States on December 22, 2024 by Mike K.
    • Great product
Very satisfied
Reviewed in the United States on July 9, 2025 by Bonnie
    • Too expensive compared to competition
If you already have a f3800 or f3800 plus as I do this is your only option. It works as advertised & I like the form factor. I cannot look past the fact that competition like the ecoflow pro ultra are offering 6kwh units and expansion batteries for the same cost....like 2000 more watt hours for the same cost. They'll need to prices these at $1500 or below before I'll buy more. ... show more
Reviewed in the United States on June 19, 2025 by Jason D

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