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Bluetti B500K expansion battery
Bluetti B500K expansion battery
Bluetti B500K expansion battery
Bluetti B500K expansion battery
Bluetti B500K expansion battery
Bluetti B500K expansion battery
Bluetti B500K expansion battery
Bluetti B500K expansion battery
Bluetti B500K expansion battery
Bluetti B500K expansion battery
Bluetti B500K expansion battery
Bluetti B500K expansion battery

Bluetti B500K Expansion Battery, 5,120Wh LiFePO4, for Apex 300

$1,912.00 - $1,912.00
$1,912.00
$1,912.00 - $1,912.00
$1,912.00
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All products sold by Reserve Power Co. include full manufacturer warranties, serviced directly by the brand.  For more information on Reserve Power Co.'s warranty policy,click here.

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Return or exchange within 30 days of delivery. Items must be unused, uninstalled, and in original packaging.

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Start a return by emailing support@reservepowerco.com with your order number. We reply within 1 business day.

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The Bluetti B500K is a 5,120Wh LiFePO4 expansion battery for the Bluetti Apex 300, nearly tripling a single unit's capacity. It's built for Apex 300 home backup systems and off-grid cabins that need multi-day runtime from one add-on battery.

Real-world numbers: about 4,352Wh usable (rated Wh × 0.85). Paired with one Apex 300, that's about 6,700Wh usable:

Load Runtime, Apex 300 + 1 × B500K (RPC estimate)
Full-size refrigerator (60W average) about 111 hrs
12V compressor fridge (50W average) about 134 hrs
Wi-Fi router and modem (20W) about 335 hrs
Laptop and monitor (100W) about 67 hrs
Window AC, 5,000 BTU (500W running) about 13 hrs

Size it for your own setup: pick your appliances and days off-grid in the RPC Power Calculator, and it shows the in-stock stations and kits that fit.

It connects with the included CA90 cable and can be wall-mounted, rack-mounted, or rolled on Bluetti's Foldable Trolley 2 (sold separately). An internal cooling fan manages heat during heavy draws. It's also compatible with the Bluetti AC300, AC500, AC200L and AC200MAX, and Bluetti rates it for over 4,000 cycles.

Best for: Apex 300 home backup systems • Multi-day outage planning • Off-grid cabins with heavy daily use

Not the best fit if: you need to move it often. The B500K is meant to stay put, mounted on a wall or rack or rolled on a trolley. For a smaller add-on battery, look at the B300K.

Works with: Apex 300 • B300K expansion battery • Bluetti AC300, AC500, AC200L and AC200MAX • Bluetti Foldable Trolley 2

Frequently Asked Questions

How much runtime does the B500K add to an Apex 300?
About 4,352Wh usable. With one Apex 300, a full-size fridge averaging 60W runs about 111 hours, over four days.

B500K or B300K?
The B500K holds about 85% more energy in one unit. The B300K is smaller and easier to stack. Both connect to the Apex 300 with a CA90 cable.

Can I mount it on a wall?
Yes. Bluetti designed it for wall mounting, rack mounting or Bluetti's Foldable Trolley 2.

WHY RPC? Genuine Bluetti product shipped directly from Bluetti's U.S. warehouses, see our sourcing documentation here. Free U.S. shipping. Price match guaranteed. Backed by Bluetti's manufacturer warranty, serviced directly by Bluetti with U.S.-based support. Register your product with Bluetti for extended coverage.

Product Authenticity This is a genuine Bluetti product, supplied to Reserve Power Co. directly by BLUETTI POWER INC of Chino Hills, California, as an authorized Bluetti dealer. Shipped new from Bluetti in original manufacturer packaging with full manufacturer documentation. Verify our sourcing here.

Specifications

  • Capacity: 5,120Wh, LiFePO4
  • Battery life: 4,000+ cycles
  • Compatible with: Apex 300, AC300, AC500, AC200L, AC200MAX
  • Mounting: wall, rack, or Foldable Trolley 2 (sold separately)
  • Cooling: internal fan
  • In the box: B500K, CA90 battery expansion cable, documents
  • Warranty: Bluetti manufacturer warranty; register for extended coverage

Specifications shown are the manufacturer's published figures for this model. Product photography is supplied by the manufacturer and used with permission as an authorized dealer. Run-time estimates are Reserve Power Co.'s own, using rated Wh × 0.85.

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Returns and Exchanges

Return or Exchange within 30 days for eligible orders

Price Match Guarantee

If you find a better price elsewhere, we will meet that price.

Authorized Dealer

For Every Brand We Carry

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Description

The Bluetti B500K is a 5,120Wh LiFePO4 expansion battery for the Bluetti Apex 300, nearly tripling a single unit's capacity. It's built for Apex 300 home backup systems and off-grid cabins that need multi-day runtime from one add-on battery.

Real-world numbers: about 4,352Wh usable (rated Wh × 0.85). Paired with one Apex 300, that's about 6,700Wh usable:

Load Runtime, Apex 300 + 1 × B500K (RPC estimate)
Full-size refrigerator (60W average) about 111 hrs
12V compressor fridge (50W average) about 134 hrs
Wi-Fi router and modem (20W) about 335 hrs
Laptop and monitor (100W) about 67 hrs
Window AC, 5,000 BTU (500W running) about 13 hrs

Size it for your own setup: pick your appliances and days off-grid in the RPC Power Calculator, and it shows the in-stock stations and kits that fit.

It connects with the included CA90 cable and can be wall-mounted, rack-mounted, or rolled on Bluetti's Foldable Trolley 2 (sold separately). An internal cooling fan manages heat during heavy draws. It's also compatible with the Bluetti AC300, AC500, AC200L and AC200MAX, and Bluetti rates it for over 4,000 cycles.

Best for: Apex 300 home backup systems • Multi-day outage planning • Off-grid cabins with heavy daily use

Not the best fit if: you need to move it often. The B500K is meant to stay put, mounted on a wall or rack or rolled on a trolley. For a smaller add-on battery, look at the B300K.

Works with: Apex 300 • B300K expansion battery • Bluetti AC300, AC500, AC200L and AC200MAX • Bluetti Foldable Trolley 2

Frequently Asked Questions

How much runtime does the B500K add to an Apex 300?
About 4,352Wh usable. With one Apex 300, a full-size fridge averaging 60W runs about 111 hours, over four days.

B500K or B300K?
The B500K holds about 85% more energy in one unit. The B300K is smaller and easier to stack. Both connect to the Apex 300 with a CA90 cable.

Can I mount it on a wall?
Yes. Bluetti designed it for wall mounting, rack mounting or Bluetti's Foldable Trolley 2.

WHY RPC? Genuine Bluetti product shipped directly from Bluetti's U.S. warehouses, see our sourcing documentation here. Free U.S. shipping. Price match guaranteed. Backed by Bluetti's manufacturer warranty, serviced directly by Bluetti with U.S.-based support. Register your product with Bluetti for extended coverage.

Product Authenticity This is a genuine Bluetti product, supplied to Reserve Power Co. directly by BLUETTI POWER INC of Chino Hills, California, as an authorized Bluetti dealer. Shipped new from Bluetti in original manufacturer packaging with full manufacturer documentation. Verify our sourcing here.

Specifications
  • Capacity: 5,120Wh, LiFePO4
  • Battery life: 4,000+ cycles
  • Compatible with: Apex 300, AC300, AC500, AC200L, AC200MAX
  • Mounting: wall, rack, or Foldable Trolley 2 (sold separately)
  • Cooling: internal fan
  • In the box: B500K, CA90 battery expansion cable, documents
  • Warranty: Bluetti manufacturer warranty; register for extended coverage

Specifications shown are the manufacturer's published figures for this model. Product photography is supplied by the manufacturer and used with permission as an authorized dealer. Run-time estimates are Reserve Power Co.'s own, using rated Wh × 0.85.

Shipping & Returns

Shipping

Processing & Transit Times

All orders are processed within 1–3 business days after payment confirmation. Orders placed after 3:00 PM Pacific Time may begin processing the following business day. You will receive a tracking number by email once your order ships.

Estimated delivery is 2–7 business days after shipment, depending on your location and the fulfillment center your order ships from. Larger items may ship via freight and can take up to 10 business days.

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Items marked "Pre-order" are not yet in stock. The estimated ship date appears on the product page, in your cart, and in your order confirmation.

Payment: A deposit, shown on the product page, is charged at checkout. The remaining balance is charged to your saved payment method before your order ships. We'll email you before the balance is charged.

Shipping: Pre-order items ship once stock arrives, on or around the estimated date. Standard transit times (2–7 business days) apply after shipment, and shipping is free as with all orders.

Orders with in-stock items: In-stock items ship within the standard shipping window stated above. Pre-order items ship separately when available, at no extra cost.

Delays: If the estimated ship date changes, we'll email you the new date. You can cancel for a full refund, including your deposit, at any time before your order ships.

Declined balance payments: If the balance can't be charged, we'll contact you to update your payment method. If payment isn't received within 5 business days, the order may be canceled and your deposit refunded.

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Free standard shipping on all orders to the contiguous United States. We do not currently ship to Alaska, Hawaii, Puerto Rico, or U.S. territories.

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We ship via UPS, FedEx, and DHL, depending on product size and your location. You will receive carrier and tracking information by email once your order ships.

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Some products — particularly large power stations and solar kits — may ship via freight carrier. If your order ships freight, you may be contacted to schedule delivery. Please inspect your shipment at the time of delivery and note any visible damage on the carrier's delivery receipt before signing.

Damaged or Lost Shipments

Report damaged or missing shipments to us within 48 hours of delivery (or expected delivery date). Include photos of the product and packaging. Contact us at support@reservepowerco.com or (424) 250-6208.

Contact

Email: support@reservepowerco.com

Phone: (424) 250-6208

Hours: Monday-Friday, 9am-5pm Pacific Time