BLUETTI B500K Expansion Battery 5,120Wh for Apex 300

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DETAILS

BLUETTI B500K for Apex 300

5,120Wh more for your Apex 300

The B500K adds 5,120Wh of LiFePO₄ storage to a BLUETTI Apex 300, taking one unit from 2,764.8Wh to 7,884.8Wh. This is the Apex 300 version: it comes with the CA90 short cable, so the Apex 300 sits on top of the battery and plugs straight in.

Stack up to six batteries on one Apex 300 for 33,484.8Wh, or link three Apex 300s and 18 B500Ks for over 100kWh. Mount it to a wall or rack in the house or RV, or put it on a trolley.

LiFePO₄ cells rated for 4,000+ cycles and a cable-free internal layout with a cooling fan keep it running for years of home backup and long trips.

5,120Wh

LiFePO₄ capacity

4,000+

Cycles to 80%

Per Apex 300

45 kg

Weight

CA90

Short cable included

Why buy BLUETTI from us

Your local BLUETTI specialists

Adding capacity is a big purchase. Buy it from a local team that will still be here to help long after the sale.

✓A real shop in Sydney

We’re a bricks and mortar store, not a faceless online warehouse. You can visit us, or pick up your order from our Sydney shop.

✓Talk to a real person in Australia

Call or message our Sydney team (details on our contact page). You’ll speak to someone local who knows BLUETTI, not an overseas call centre.

✓Shipped Australia-wide

We send BLUETTI orders to every state and territory, from the city to the bush.

✓The right battery and cable

We’ll confirm the BLUETTI B500K suits your power station and that you have the right connection cable before it ships.

✓Local support after you buy

Questions about setting it up, charging or getting the most from your BLUETTI? Our team here in Australia is happy to help.

✓The whole setup in one place

We stock the BLUETTI power stations, panels, chargers, cables and mounting trays that work together, so you can get everything from one store.

Ask us a questionMake us your first stop for BLUETTI.

Home to the road

Big storage for the van or the house

One B500K nearly triples the capacity of an Apex 300. BLUETTI’s estimates for an Apex 300 + B500K include about 77 hours on a fridge and 14 hours on a 500W vacuum.

✓5,120Wh per battery
✓Apex 300 + 1 x B500K: 7,884.8Wh
✓Apex 300 + 6 x B500K: 33,484.8Wh
✓Discharges from -20°C to 40°C

BLUETTI B500K 5,120Wh expansion battery beside a caravan and a house

Home to the road

Big storage for the van or the house

One B500K nearly triples the capacity of an Apex 300. BLUETTI’s estimates for an Apex 300 + B500K include about 77 hours on a fridge and 14 hours on a 500W vacuum.

✓5,120Wh per battery
✓Apex 300 + 1 x B500K: 7,884.8Wh
✓Apex 300 + 6 x B500K: 33,484.8Wh
✓Discharges from -20°C to 40°C

BLUETTI Apex 300 and B500K on a trolley (sold separately), 520 x 327 x 308.5 mm

Fixed or mobile

Wall, rack or trolley

Bolt the B500K to a wall or rack in your home or RV using its mounting holes, or sit it on BLUETTI’s Foldable Trolley 2 (sold separately) to wheel it around.

✓520 x 327 x 308.5 mm
✓Stacks neatly under the Apex 300
✓Cable-free internal design and cooling fan

Connecting it

CA90 for stacks, P090A for spread-out setups

✓CA90 short cable included: stack the Apex 300 straight on top
✓Up to 6 batteries per Apex 300; you can mix B500K, B300K, B300 and B300S
✓BLUETTI says to use the long P090A cable once you go past 3 stacked packs
✓Monitor each battery in the BLUETTI app

Not sure which cables you need for your layout? contact our team.

BLUETTI Apex 300 with one B500K for 7,884.8Wh, or six B500K for 33,484.8Wh

Connecting it

CA90 for stacks, P090A for spread-out setups

✓CA90 short cable included: stack the Apex 300 straight on top
✓Up to 6 batteries per Apex 300; you can mix B500K, B300K, B300 and B300S
✓BLUETTI says to use the long P090A cable once you go past 3 stacked packs
✓Monitor each battery in the BLUETTI app

Not sure which cables you need for your layout? contact our team.

Estimated runtimes for a BLUETTI Apex 300 with B500K: refrigerator, window air conditioner, washer and vacuum

Frequently asked questions

Which power stations does the B500K work with?

BLUETTI lists the AC200L, AC200MAX, AC300, AC500 and Apex 300. This listing is the Apex 300 version with the CA90 short cable. The AC500 also needs a P090D to P150D cable, sold separately.

How many can I connect to an Apex 300?

Up to six. Use the CA90 cable for stacked B500Ks and the P090A cable when you go past three packs stacked separately. You can mix B500K, B300K, B300 and B300S, six packs at most.

How long will it run my gear?

BLUETTI’s example: a 100W light runs about 43.8 hours on one B500K (5,120Wh x 98% x 90% ÷ 103W including 3W self-consumption). Actual results vary.

Can I use it without a power station?

Not on its own: it has no power bank mode and is not a UPS by itself. BLUETTI says it can run with other parts of its system instead, charging from the SolarX 4K or Charger 2 and powering DC gear through the Hub D1.

Can I use or charge it in the cold?

It can power devices from -20°C, but it only charges between 0°C and 40°C. After a full discharge, recharge it promptly and let it sit at 10°C or warmer for 12 hours first.

Is it waterproof?

No. Keep it dry and don’t leave it in a humid place for long.

Still got a question? Our Sydney team is happy to help. Get in touch and you’ll talk to a real person in Australia.

Features

✓5,120Wh LiFePO₄ expansion battery
✓4,000+ cycles to 80% capacity
✓Apex 300 version with CA90 short cable
✓Up to 6 per Apex 300 (33,484.8Wh)
✓Over 100kWh with 3 x Apex 300 and 18 x B500K

✓Works with AC200L, AC200MAX, AC300, AC500 and Apex 300
✓Mix with B300K, B300 and B300S
✓Wall or rack mounting holes
✓Cable-free internal design with cooling fan
✓2 x expansion ports, 58.4VDC, 90A max

Make it a complete setup

Pairs well with

BLUETTI Apex 300 Versatile Power Station | 3,840W 2,764.8Wh

The Apex 300 this version is built for: 3,840W of AC and 2,764.8Wh on its own.

View product

12 Volt Direct Battery Tray Mount To For Bluetti Apex 300 & B300K / B500K Expansion Batteries

Our tray mount for the Apex 300 and B300K/B500K batteries, for a secure vehicle install.

View product

Bluetti Hub D1 DC Power Hub For Apex 300 Powerstation

Hub D1 adds 12V, Anderson and USB outputs. BLUETTI says it can also run from the B500K.

View product

Bluetti B300K Expansion Battery 2,764.8Wh for Apex 300

Smaller B300K (2,764.8Wh) for Apex 300. Mix it with B500Ks, up to six batteries per unit.

View product

Specifications

Battery

Capacity	5,120Wh
Chemistry	LiFePO₄ (lithium iron phosphate)
Cycle life	4,000+ cycles to 80% original capacity

Input / Output

Expansion ports	2 x 58.4VDC max, 90A max
Charging current	65A max
Discharging current	70A max

General

Compatible with	AC200L, AC200MAX, AC300, AC500, Apex 300, B300K
Cable included	CA90 short cable (Apex 300 version)
Weight	45 kg
Dimensions (L x W x D)	520 x 327 x 308.5 mm
Charging temperature	0°C to 40°C
Discharging temperature	-20°C to 40°C
Storage temperature	Up to 1 month: -20°C to 40°C; up to 6 months: -20°C to 25°C
Working humidity	5% to 95% RH

What's Included

1 x BLUETTI B500K expansion battery
1 x Battery expansion cable (CA90 short cable)
1 x User manual

Product Details

SKU	BE-B500K-APEX
Brand	Bluetti
Capacity	5,120Wh
Battery chemistry	LiFePO4
Compatible with	BLUETTI Apex 300
Cable included	CA90 short cable
Shipping Weight	45.0000kg
Shipping Width	0.327m
Shipping Height	0.309m
Shipping Length	0.520m