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Review · Power station extra batteriesResearched

BLUETTI B500K review

BLUETTI B500K Expansion Battery (5,120Wh)

By Tom Calder

Our verdict · Researched
3.8 / 5

5,120Wh in one 99.21 lb pack for the AC200L, AC300, AC500, AC200MAX and Apex 300, by BLUETTI's listings: home-backup scale.

Best for
The most capacity per box for a BLUETTI AC200L or Apex 300
Skip it if
You own an Elite model
Current price
$1,799.00
Last checked November 14, 2026
In stock
Check price at BLUETTI →

We earn a commission if you buy through the retailer links on this page. It doesn't change our verdict. How we make money →

Researched, not used. We haven't used this product. This review is built from the maker's specifications, owner reports and our own sizing.

What we like

  • 5,120Wh in one pack
  • Fits five BLUETTI stations

Worth knowing

  • 99.21 lb
  • 4,000 cycles, fewer than the B300K's 6,000

ⓘ As an Amazon Associate, PreparedStates earns from qualifying purchases. We may earn a commission when you buy through our links. When two products are close, commission can decide which one we pick. A clearly better product always wins. Amazon prices come from Amazon's own product data and can change at any time.

Who shouldn't buy this

Don't buy it if you own an Elite model: the B500K doesn't fit any of them, and if you'll ever move it, two B300Ks split the weight.

Key specs

Capacity5,120 Wh
FitsBLUETTI AC200L, AC300, AC500, AC200MAX, Apex 300
Weight99.21 lb
Cycles4,000
BatteryLiFePO4
How this review works

This is a Researched review: we haven't used this product. We check every specification against at least two independent sources, re-check the US price on a schedule where we can track it automatically, and say plainly who it isn't for. Commissions never change a rating.

How we review →Full methodology →

If this isn’t the one

BLUETTI B300K Expansion Battery (2,764.8Wh)
BLUETTI B300K Expansion Battery (2,764.8Wh)
4.0

Best for Expanding a BLUETTI AC200L, AC300 or Apex 300

in stock when checked
Price checked Nov 14
Read the review →
DJI Power Expansion Battery 2000 (2,048Wh)
DJI Power Expansion Battery 2000 (2,048Wh)
4.2

Best for Adding 2kWh to a DJI Power 1000 V2 or 2000

in stock when checked
as of Nov 14, 2026, 5:36 PM ET · DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Read the review →
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