BLUETTI B300K 2,764.8Wh Expansion Battery
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Description
BLUETTI B300K 2,764.8Wh Expansion Battery, Black · product code 281-PB300K2EUGYBL010
At a glance
- Capacity2,764.8Wh
- CellsLiFePO4, 4,000+ cycles
- ForApex 300, AC300, AC500, AC200L, AC200MAX
- Ports2 x expansion, 1 x USB-A
- Weight29.5kg
- Size525 x 327 x 209mm
Full description
BLUETTI's B300K is an expansion battery, not a power station: it has no inverter or AC sockets, and it is not listed by BLUETTI for the AC180P, AC70P or AC200PL. Battery level, status and firmware updates appear in the BLUETTI app through the connected station.
Connected to an AC300 or AC500 it charges from 5% to 80% in about 45 minutes.
What stands out
2,764.8Wh LiFePO4
Automotive-grade square cells with AI-BMS, 4,000+ cycles to 80% capacity.
For Apex 300, AC300, AC500, AC200L and AC200MAX
Up to six per Apex 300 or AC500, four per AC300, two per AC200L or AC200MAX.
Stacks under the Apex 300
Short CA90 connection cable included; same 525 x 327mm footprint.
Daisy-chain expansion
Two battery expansion ports, 58.4V DC, 90A max.
Charges through the station
AC, solar or car input of the host unit; 60A max charging current.
USB-A port
12W output for small devices.
Five-LED charge indicator
Each LED shows 20% state of charge; app monitoring via the station.
Key features
- Capacity: 2,764.8Wh LiFePO4, 4,000+ cycles
- Compatible with: Apex 300 (up to 6), AC500 (up to 6), AC300 (up to 4), AC200L and AC200MAX (up to 2)
- Expansion ports: 2 x 58.4V DC, 90A max
- Charging: Through the connected power station, 60A max
- Output: 1 x USB-A 12W
- Display: 5 LED charge indicators
- Weight: Approx. 29.5kg
- In the box: B300K battery, short battery connection cable CA90, user manual
From the manufacturer
Specifications
BLUETTI B300K 2,764.8Wh Expansion Battery, product code 281-PB300K2EUGYBL010.
Product overview
| Brand | BLUETTI |
|---|---|
| Model | B300K (Apex 300 version with CA90 cable) |
| Part number | 281-PB300K2EUGYBL010 |
| Product type | Expansion battery (no inverter or AC outlets) |
| Colour | Grey / black |
| Product code | 281-PB300K2EUGYBL010 |
Performance
| Capacity | 2,764.8Wh (51.2V, 54Ah) |
|---|---|
| Compatible power stations | Apex 300 (up to 6), AC500 (up to 6), AC300 (up to 4), AC200L (up to 2), AC200MAX (up to 2); not listed by BLUETTI for AC180P, AC70P or AC200PL |
Display
| Display | 5 LED indicators, 20% per LED |
|---|
Connectivity
| Expansion ports | 2 x battery expansion ports, 58.4V DC max, 90A max |
|---|
Functions and programmes
| Cycle life | 4,000+ cycles to 80% of original capacity |
|---|
Dimensions and installation
| Dimensions (L x W x H) | 525 x 327 x 209 mm |
|---|---|
| Weight | Approx. 29.5 kg |
More details
| Battery chemistry | LiFePO4, automotive-grade square cells with AI-BMS |
|---|---|
| Charging | Through the connected power station only; 60A max charging current |
| Discharging current | 70A max |
| Charging time | 5% to 80% in about 45 minutes on an AC300 or AC500 |
| Output | 1 x USB-A, 12W max |
| App | Monitored in the BLUETTI app via the connected station |
| Operating temperature | Charging 0 to 40 °C; discharging -20 to 40 °C |
| In the box | B300K expansion battery, short battery connection cable CA90, user manual |
Reviews
BLUETTI B300K 2,764.8Wh Expansion Battery in Black.
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Delivery & returns
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In Ireland the two-year period is a minimum. The six-year limitation period in which consumers in Ireland can raise a problem with goods is not affected.
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Sellers are liable for any lack of conformity which existed when the goods were delivered, and which becomes apparent within the legal guarantee period. Sellers in such a situation are required to offer:
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What to do if you receive non-conforming goods:
- Contact the seller as soon as possible to report the issue;
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Sellers and producers may also offer commercial guarantees, which apply independently from the legal guarantee. For example, you may see this GARAN label representing a commercial guarantee of durability offered by the producer at no additional cost and covering the entire good.
Recycling your old electricals
Recycling your old electricals
Waste Electrical and Electronic Equipment (WEEE) is taken back free of charge on a one-for-one, like-for-like basis. Waste batteries including rechargeable batteries are taken back free of charge. You are not obliged to make any purchase when returning old batteries. Each local authority must also accept household WEEE and small batteries free of charge at its recycling facilities. All WEEE and waste batteries must be recycled and should not be placed in any of your household wheelie bins. Make sure you always recycle all your old electrical goods and batteries.
Take-back is available at Euronics member stores. Find your nearest store or see how take-back works, including collection when we deliver a large appliance.
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