• Anker SOLIX BP3800 Expansion Battery Left And Front View
  • Anker SOLIX BP3800 Expansion Battery Front And Right View
  • SOLIX BP3800 Front View
  • SOLIX BP3800 Rear View
  • SOLIX BP3800 Left View
  • Directly Charge Your RV With The SOLIX F3800 And BP3800 Battery
  • Directly Charge Your EV With The SOLIX F3800 And BP3800 Battery
  • Expand Up To 53.8kWh Capacity With The SOLIX F3800 And BP3800 Batteries
  • Anker SOLIX BP3800 Expansion Battery 2
  • Anker SOLIX BP3800 Expansion Battery 3
  • Anker SOLIX BP3800 Expansion Battery 4
  • Anker SOLIX BP3800 Expansion Battery 5
  • Anker SOLIX BP3800 Expansion Battery 6
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Anker SOLIX BP3800 Expansion Battery | For SOLIX F3800 & F3800 Plus

Anker

$1,599.00
$1,599.00
In Stock — Ready to Ship
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Product Details

The SOLIX BP3800 Expansion Battery adds 3840Wh of LFP capacity per pack to the F3800, F3800 Plus, and F1500 — matching the F3800's base capacity in a single expansion. One pack on the F3800: 7680Wh total. Two packs: 11,520Wh. On the F3800 Plus, three packs reach 15,360Wh — enough for multi-day whole-home coverage on a single charge.

Each BP3800 connects to the station's expansion port and charges simultaneously via AC, solar, or car input. The SOLIX BMS manages charge state balancing between the base station and all connected expansion batteries automatically.

Brand new in box

Brand new in box

5 year factory warranty

5 year factory warranty

Fast shipping (5–7 business days)

Fast shipping (5–7 business days)

Authorized Anker SOLIX dealer

Authorized Anker SOLIX dealer
  • 3840Wh per pack — matches F3800 base capacity for clean capacity doubling with one addition
  • F3800 + 2× BP3800 = 11,520Wh. F3800 Plus + 3× BP3800 = 15,360Wh maximum
  • Compatible with SOLIX F3800, F3800 Plus, and F1500 — confirmed compatibility, no adaptation required
  • LFP chemistry: 3,000 cycles to 80%+ capacity, decade-scale service life at regular use
  • Charges simultaneously with host station via AC, solar, or car input
  • SOLIX BMS manages automatic charge balancing across all connected batteries

The SOLIX BP3800 Expansion Battery adds 3840Wh of LFP capacity per pack to the F3800, F3800 Plus, and F1500 — matching the F3800's base capacity in a single expansion. One pack on the F3800: 7680Wh total. Two packs: 11,520Wh. On the F3800 Plus, three packs reach 15,360Wh — enough for multi-day whole-home coverage on a single charge.

Each BP3800 connects to the station's expansion port and charges simultaneously via AC, solar, or car input. The SOLIX BMS manages charge state balancing between the base station and all connected expansion batteries automatically.

This item comes with a 5-Year Factory Warranty from Anker SOLIX. Warranty coverage begins from the date of purchase and is automatically tracked — no registration required. In the event of a covered defect, Anker SOLIX will repair or replace the unit at no charge. Proof of purchase (order number, sales invoice, or dated receipt from an authorized reseller) is required for warranty claims. Exclusions apply for damage from misuse, disassembly, unauthorized modifications, or products purchased from unauthorized resellers. For warranty claims: support@ankersolix.com or 1-800-988-7973 (US/CA).