The Anker SOLIX BP3800 Expansion Battery delivers 3840Wh of reliable backup energy to significantly extend the runtime of your power system. Designed to integrate seamlessly with the SOLIX F3800 and F3800 Plus power stations, it provides the extra capacity needed to keep essential home appliances, RVs, or equipment running smoothly during unexpected outages or off-grid excursions.
You can connect up to six BP3800 units to a single power station, expanding overall capacity up to 26.9kWh for comprehensive multi-day home power backup. The system automatically balances power across connected units to maintain battery longevity and ensure efficient performance under heavy loads.
Key Features
Brand
Anker
Model
BP3800 (A1790111-85)
Capacity
3840Wh (51.2V 75Ah)
Expansion Battery Port Input
75A Max
Expansion Battery Port Output
170A Max
Discharging Temperature
-4°F to 104°F
Charging Temperature
32°F to 104°F
Dimensions
15.5 × 14.0 × 10.3 in
Net Weight
72.0 lb
Highlights
Anker SOLIX BP3800 Expansion Battery Features
Expandable Power Capacity up to 26.9kWh
The BP3800 is designed for use with the F3800 or F3800 Plus power stations.
Up to six expansion batteries can be connected to reach a total capacity of 26.9kWh. This capacity supports high-wattage appliances such as washing machines and air conditioners.
RV and EV Compatibility
The expanded battery capacity provides power for home use, RVs, and electric vehicles.
Compatibility
Compatible exclusively with the Anker SOLIX F3800 and SOLIX F3800 Plus portable power stations. Supports linking up to 6 expansion units per power station.
How to use
Connect the expansion battery directly to your Anker SOLIX F3800 or F3800 Plus power station using the included battery-to-host cable. Press and hold the power button for 2 seconds to turn the unit on or off.
Press and hold the On/Off button for 2 seconds to power the expansion battery on or off.
Which power stations are compatible with the BP3800?
The Anker SOLIX BP3800 is compatible with the Anker SOLIX F3800 and SOLIX F3800 Plus power stations.
How many BP3800 expansion batteries can be connected at once?
Up to 6 BP3800 expansion batteries can be connected to a single Anker SOLIX F3800 or F3800 Plus power station.
Can the BP3800 expansion battery be used on its own?
No, the expansion battery cannot be used independently. It must be connected to a compatible power station to charge, discharge, and monitor via the app.
Real feedback from power station owners across the USA
★★★★★
✔ Verified Buyer
Saved us during a severe outage!
"We lost power for 2 days during a storm in Texas. This Rentoos unit kept our full-size fridge, phones, and CPAP machine running without a hitch. Quiet, reliable, and charges insanely fast!"
JD
Jason D.
Austin, TX
★★★★★
✔ Verified Buyer
Perfect for off-grid RV camping
"Took this on a 2-week cross-country road trip. Ran our mini-fridge, laptops, and outdoor lights easily. Paired it with solar panels and never ran out of power once. 10/10 recommendation."
MK
Marcus K.
Denver, CO
★★★★★
✔ Verified Buyer
Unbeatable price with 70% off!
"I was skeptical about the 70% discount, but the build quality is premium. Free shipping was super quick (arrived in 3 days). Best emergency backup purchase I've made."
SR
Sarah R.
Tampa, FL
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