Does the BP3800 work on its own?

No. It is an expansion battery for the Anker SOLIX F3800 and needs that power station as the host. It has no outlets or inverter of its own.

How many BP3800 packs can one F3800 take?

Up to six expansion packs. With the F3800's own 3.84kWh, that reaches 26.9kWh of total capacity.

What battery chemistry does it use?

It uses LFP (lithium iron phosphate) cells, which Anker rates for a 10-year lifespan with everyday use.

Can it charge in cold weather?

Charging is limited to 0°C to 40°C (32°F to 104°F). Discharging works from -20°C to 40°C (-4°F to 104°F).

What comes in the box?

The BP3800 battery, a battery-to-host cable, a user manual and the warranty paperwork.

How long is the warranty?

Five years, full device. That is longer than the two years common among rivals.

Where is the Anker SOLIX BP3800 Expansion Battery cheapest?

At Best Buy, for $1,799.99, as of our latest check.

What do buyers say about the Anker SOLIX BP3800 Expansion Battery?

Rated 4.9 out of 5 from 151 ratings.

Where can I buy the Anker SOLIX BP3800 Expansion Battery?

10 stores we checked sell it, including Ankersolix US, Best Buy, ankersolix.com, ShopSolar.com, Adorama.

Anker SOLIX BP3800 Expansion Battery

Best price now

$1,799.99at Best BuyChecked 16 h ago

Compared across 10 stores. Prices are checked against each store and labelled with when.

Visit Best Buy

Anker SOLIX BP3800 Expansion Battery

Best price now

$1,799.99at Best BuyChecked 16 h ago

Compared across 10 stores. Prices are checked against each store and labelled with when.

Visit Best Buy

Ask our agent about this product

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Price facts

Last seen at $1,799.99 at Best Buy on Nov 9.
Checked at 10 stores.

Our take on the Anker SOLIX BP3800 Expansion Battery

The BP3800 is a 3,840Wh add-on battery for the Anker SOLIX F3800 portable power station. It uses LFP cells rated for over a decade of use and stacks with up to six packs, taking an F3800 system to 26.9kWh. It is a fixed companion, not a standalone unit: it needs the F3800 host and the included battery-to-host cable. Buyers choose it to stretch an F3800 through multi-day outages or to run a home backup setup, where it competes with modular rivals like EcoFlow and Bluetti that also sell stackable LFP expansion packs. At 72 lb it is heavy and not meant to be carried far.

Best forF3800 owners extending runtime for multi-day outagesHome backup setups wired for whole-home or critical loadsOff-grid and cabin users who need large stored capacityBuyers who want LFP chemistry and a long warranty

Pros

Adds 3,840Wh per pack, up to six packs for 26.9kWh total
EV-class LFP cells rated for a 10-year lifespan
5-year full-device warranty, longer than the typical 2 years
Smart temperature control and wide discharge range down to -4°F
Simple connection to the F3800 with the included cable

Cons

Heavy at 72 lb and awkward to move
Useless without an F3800 host
Charging stops below freezing, unlike discharging
No built-in inverter or outlets of its own
Large footprint for a single battery module

Anker SOLIX BP3800 Expansion Battery prices at every store

Best BuyNew
In stock
$1,799.99Free shippingChecked 16 h ago
Visit Best Buy
ankersolix.comNew
In stock
$1,799.99Free shippingChecked 16 h ago
Visit ankersolix.com
ShopSolar.comNew
In stock
$1,799.99Free shippingChecked 16 h ago
Visit ShopSolar.com
Max ToolNew
In stock
$1,799.99Free shippingChecked 16 h ago
Visit Max Tool
Outbound PowerNew
In stock
$1,799.99Free shippingChecked 16 h ago
Visit Outbound Power
Off-Grid SourceNew
In stock
$1,799.99Free shippingChecked 16 h ago
Visit Off-Grid Source
Factory Authorized OutletNew
In stock
$1,799.99Free shippingChecked 16 h ago
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The Cabin Depot USANew
In stock
$1,799.99+ $75.00 shippingChecked 16 h ago
Visit The Cabin Depot USA
Ankersolix USNew
In stockReturn policy
$1,999.99Checked 13 h ago
Visit Ankersolix US
AdoramaNew
In stock
$1,799.99+ $280.00 shippingChecked 16 h ago
Visit Adorama

Anker SOLIX BP3800 Expansion Battery price history

Lowest price we've seen: $1,799.99 on Nov 9 at Best Buy. Tracked across 9 stores since Nov 9.

What reviewers say

4.9 / 5151 ratings

Owners rate it very highly, with 151 ratings averaging 4.9 out of 5. F3800 users praise the easy expansion and the runtime it adds during outages. Complaints are few and mostly about weight and the need for the host unit.

What people mention

CapacityPraisedOwners say each pack adds meaningful runtime and stacking several covers multi-day outages.
SetupPraisedBuyers describe connecting it to the F3800 with the included cable as quick and simple.
WeightCriticisedAt 72 lb it is hard to lift and move, so owners treat it as a fixed installation.
BuildPraisedReviewers report a sturdy unit and trust the LFP cells for long service.
Host dependencyMixedIt only works with the F3800, which some buyers find limiting for the investment.

About the Anker SOLIX BP3800 Expansion Battery

Features

Huge Capacity Up to 26.9kWh: Anker 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 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 F3800 Portable Power Station Expansion Battery worry-free with a 5-year full-device warranty.

What's in The Box

Anker BP3800 Expansion Battery

Battery-to-Host Cable

User manual

Warranty

5 Year Limited Factory Warranty

30 Day Satisfaction Guaranteed

Specifications

SKU

A1790111-85

Brand

Anker

Capacity

51.2VDC, 75Ah / 3840Wh

Expansion Battery Port Input

75A Max

Expansion Battery Port Output

170A Max

Discharging Temperature

-20°C to 40°C / -4°F to 104°F

Questions and answers

Does the BP3800 work on its own?: No. It is an expansion battery for the Anker SOLIX F3800 and needs that power station as the host. It has no outlets or inverter of its own.
How many BP3800 packs can one F3800 take?: Up to six expansion packs. With the F3800's own 3.84kWh, that reaches 26.9kWh of total capacity.
What battery chemistry does it use?: It uses LFP (lithium iron phosphate) cells, which Anker rates for a 10-year lifespan with everyday use.
Can it charge in cold weather?: Charging is limited to 0°C to 40°C (32°F to 104°F). Discharging works from -20°C to 40°C (-4°F to 104°F).
What comes in the box?: The BP3800 battery, a battery-to-host cable, a user manual and the warranty paperwork.
How long is the warranty?: Five years, full device. That is longer than the two years common among rivals.
Where is the Anker SOLIX BP3800 Expansion Battery cheapest?: At Best Buy, for $1,799.99, as of our latest check.
What do buyers say about the Anker SOLIX BP3800 Expansion Battery?: Rated 4.9 out of 5 from 151 ratings.
Where can I buy the Anker SOLIX BP3800 Expansion Battery?: 10 stores we checked sell it, including Ankersolix US, Best Buy, ankersolix.com, ShopSolar.com, Adorama.

Stores we've priced the Anker SOLIX BP3800 Expansion Battery at

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