BLUETTI B300K expansion battery I 2764 Wh
BLUETTI B300K expansion battery I 2764 Wh - Standard VAT rate 19% (private customers in the EU; Austria etc.; companies in Germany) is not in stock and will be shipped as soon as available again.
Delivery time: approx. 6 days
Collection possible from warehouse Fabrikstr. 1
Collection date after consultation
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BLUETTI B300K expansion battery I 2764 Wh
BLUETTI B300K expansion battery I 2764 Wh - Standard VAT rate 19% (private customers in the EU; Austria etc.; companies in Germany) is not in stock and will be shipped as soon as available again.
BLUETTI · ENERGY STORAGE
BLUETTI B300K – 2,764.8 Wh Expansion Battery
The BLUETTI B300K adds 2,764.8 Wh of LiFePO4 energy to compatible power stations. Rated at 51.2 V / 54 Ah and 29.5 kg, with two expansion ports and a 12 W USB-A output, it supports approved AC200L, AC200MAX, AC300, AC500 and Apex 300 configurations. The connection cable must match the revision.
Key specifications
Overview and applications
The B300K is an expansion module, not a standalone 230 V power station. It increases runtime in compatible BLUETTI setups for camping, motorhomes, service work, backup and solar energy. It does not automatically increase inverter output. An Apex 300 rated at 2,764.8 Wh plus one B300K provides 5,529.6 Wh nominal energy in a supported configuration.
Benefits and features
Longer runtime for compatible power stations.
Durable LFP battery cells.
For approved host devices and cable variants.
Connect supported BLUETTI configurations.
Direct 12 W output for small devices.
Monitoring of operating conditions.
Sturdy aluminium enclosure.
More stored energy, not automatically more AC output.
Technical highlights
More energy, not higher inverter power
The B300K adds energy to a compatible BLUETTI host but does not increase its rated AC output. A 500 W constant load could theoretically use 2.7648 kWh in about 5.5 hours, with actual runtime lower due to losses and reserves.
Verify the exact connector
Listed host families include AC200L, AC200MAX, AC300, AC500 and Apex 300. Apex 300 and AC500 configurations require the correct connector or adapter revision; battery ports are not universally interchangeable.
Cycle-life and product revisions
The earlier BLUETTI specification and existing SEV text cite 4,000+ cycles to 80% capacity; newer BLUETTI pages sometimes cite 6,000+. Verify the exact delivered revision and applicable warranty documents.
USB-A is not a 230 V outlet
The built-in USB-A port provides 5 V/2.4 A up to 12 W. Household appliances need a compatible inverter-equipped power station. The listed charge and discharge currents are DC ratings.
Keep the battery dry
The original product text says the battery is not waterproof. Charging temperature is 0–40°C and discharging −20 to +40°C. Temperature limits can reduce allowable current.
Capacity for suitable solar setups
Within a compatible setup, the B300K can support solar self-consumption. Any 0% German VAT selection applies only if section 12(3) UStG qualifies the specific transaction.
Suitable use cases
Increase compatible host battery capacity.
Extra energy with correct connector version.
Modular configurations per manufacturer guidance.
Extend runtime of portable 230 V systems.
Support compatible equipment away from mains.
Part of an approved BLUETTI solar configuration.
Before ordering
A compatible BLUETTI host and correct cable are required. The battery has no standalone 230 V AC output. Any 0% German VAT option is only available when legal conditions are met.
Technical specifications
Frequently asked questions
Is the B300K a complete power station?
No. It is an expansion battery with USB-A. A compatible host is needed for 230 V.
How much capacity is added?
2,764.8 Wh or 2.7648 kWh nominal.
Does it work with Apex 300?
Yes with a compatible Apex 300 variant; confirm the cable first.
Can it expand an AC500?
Yes with an appropriate adapter and approved battery connection.
What is the cycle-life rating?
Earlier documents cite over 4,000 to 80% capacity; some newer manufacturer pages claim more.
Does it have a 230 V AC outlet?
No, only a maximum 12 W USB-A output directly on the module.
Can the battery be left in rain?
No; it is not documented as waterproof. Keep it dry.
When can 0% solar VAT apply?
Only when the statutory conditions for that specific supply apply.
Related BLUETTI systems
View BLUETTI Apex 300 →Choose the right battery configuration
We can verify compatible host models, cables and battery capacity for your BLUETTI setup.
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