Manufacturer product image. Review the included items below.
Manufacturer product image. Review the included items below.
BLUETTI B500
Expansion battery
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A 4,960 Wh LiFePO4 expansion battery for the EP800 and EP900 home energy storage systems.
- 4,960 Wh · Nominal battery capacity
- LFP · Battery chemistry
- 127.87 lb · Weight
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What this equipment is for
Adds stored energy to an installed EP800 or EP900 system.
What to check before buying
127.87 lb. Part of an installed home energy storage system, not a portable battery. Needs an EP800 or EP900 inverter and a base bracket; these are sold separately. Home energy storage equipment must be installed by a BLUETTI-authorized installer; do-it-yourself or non-authorized installation is not covered by the warranty. If installation and grid connection are completed within 180 days of receipt, the warranty runs from the installation date; otherwise it starts on the date of receipt.
Specifications
Expansion battery for EP800 and EP900SKU P-B500-UN-GY-BL-010
Power & capacity
- Nominal battery capacity
- 4,960 Wh
- Battery chemistry
- LFP
Connections & expansion
- Compatible equipment
- EP800, EP900
Dimensions & operating conditions
- Dimensions (L x W x H)
- 25.0 x 12.8 x 13.3 in
- Weight
- 127.87 lb
Warranty & certifications
- Manufacturer warranty
- 10 years
- Certifications
- CB, CE, FCC, ICES, IP65, PSE, RCM, UKCA, UL1973, UL9540A, UN38.3-2022
Manufacturer specifications for the selected configuration. Nominal battery capacity is not a runtime estimate.
Compare equipment.
| Equipment |  B500Expansion battery for EP800 and EP900View product |  BP2000 Gen 21 expansion batteryView product |
|---|---|---|
| Price | ||
| Nominal battery capacity | 4,960 Wh | 2,048 Wh |
| Weight | 127.87 lb | 15.3 kg |
| Battery chemistry | LFP | LFP |
| Manufacturer battery cycle life | — | 4,000 (≥80%) cycles |
| Compatible equipment | EP800, EP900 | C2000 Gen 2 |
| Manufacturer warranty | 10 years | 5 years |
| Dimensions — see PDP for orientation | 25.0 x 12.8 x 13.3 in | — |
Your questions.
Who is this equipment for?
Adds stored energy to an installed EP800 or EP900 system.
What should I verify before choosing?
127.87 lb. Part of an installed home energy storage system, not a portable battery. Needs an EP800 or EP900 inverter and a base bracket; these are sold separately. Home energy storage equipment must be installed by a BLUETTI-authorized installer; do-it-yourself or non-authorized installation is not covered by the warranty. If installation and grid connection are completed within 180 days of receipt, the warranty runs from the installation date; otherwise it starts on the date of receipt.
What warranty applies?
BLUETTI lists a ten-year manufacturer warranty. Warranty service is requested directly from BLUETTI, in the BLUETTI app or on its online service page.
What about delivery and returns?
Installation is separate. For a return or exchange, contact BetterPowered; it follows BLUETTI’s policies.
Which payment methods do you accept?
Pay securely by credit or debit card. Affirm and Klarna offer payment plans for eligible personal equipment purchases. Checkout shows the methods available for your order.
Can I finance my purchase?
Yes. Choose Affirm or Klarna at checkout for eligible personal equipment purchases. Review your payments and terms before accepting. For contractor-managed installation projects, ask about BetterPowered Capital. Financing is subject to eligibility and approval.
Can I place an order?
Yes. Add the equipment to your cart and complete secure checkout on the website or in the app. Review your delivery address, taxes, total and return terms before paying.