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Bluetti B500K Expansion Battery

Bluetti B500K Expansion Battery

Adds 5,120Wh to an Apex 300. One of these nearly triples how long it runs.

$2,149.00 USD
$2,149.00 USD
Sale Sold out
Shipping calculated at checkout.

Pickup only: Sand Island, Honolulu. Mon–Fri, 9am–4:30pm. We email you when it's ready.

✓ Bluetti manufacturer warranty, and local help if something goes wrong

✓ Sold by a licensed Hawai'i installer, since 2018

✓ Questions? Text 808-425-9566

What will it run?

The B500K is not a standalone battery and must be paired with the Apex 300. These numbers demonstrate what the additional capacity would add to the Apex 300.

  • Refrigerator on its own: about 4⅓ more days
  • Fridge, Wi-Fi, two fans, and lights: about 1 more day
  • CPAP, no humidifier, 8-hour nights: about 13 more nights
  • Box fan on medium: about 3½ more days
  • Phone charges: 240+ more

Specs

  • Capacity: 5,120 Wh per unit, LiFePO₄
  • Add-on only: connects to and expands an Apex 300 — doesn't power anything on its own
  • Stackable: combine multiple units to grow one Apex 300 setup toward 58 kWh total
  • Battery life: 4,000+ cycles to 80% capacity
  • Size: about 99 lbs (45 kg), 20.5 × 12.9 × 12.1 in — wall-mountable or sits on Bluetti's trolley
  • Warranty: 5-year Bluetti manufacturer warranty

What's in the box

  1. B500K expansion battery
  2. Battery connection cable (P090A to P090A)
  3. User manual

Note: Does not include an AC charging cable. It charges through the Apex 300 it's connected to.

Pickup, returns, and warranty

Pickup: Pay online, then pick up at our Sand Island shop, Mon–Fri, 9am–4:30pm. Closed holidays.

Wait for the email: we'll let you know when your order's ready for pickup. Estimated pickup dats shown at checkout are only estimates.

Returns: All sales are final. We do not accept returns, refunds, or exchanges, including for unopened products.

Warranty: every Bluetti product carries Bluetti's own manufacturer warranty, not Mālama's. If something needs a claim, bring it to us first and we'll help you through Bluetti's process.

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Why buy it from us instead of online?

  • It's already on island

    If you've tried finding these online, you realize pretty quick that large power stations like these either do not ship to Hawai'i or cost an arm and a leg while taking weeks to get here.

  • We install batteries for a living

    We're licensed electrical contractors that specialize in solar + batteries, since 2018.

  • Real answers from real people

    Text us. Call us. Or just come down and talk story and we'll show you exactly what options you have.