• BLUETTI Bluetti B300K V2 Expansion Battery For Backup Power lifestyle product image
  • BLUETTI B300K expansion battery
  • BLUETTI B300K expansion battery product view
  • BLUETTI B300K expansion battery alternate view
  • BLUETTI B300K expansion battery connection view
  • BLUETTI B300K expansion battery detail
1 7

Bluetti B300K V2 Expansion Battery For Backup Power

Bluetti B300K V2 Expansion Battery For Backup Power

$1,099.00 USD
$1,199.00 USD $1,099.00 USD
Sale Sold out
Shipping calculated at checkout.

 Refund Policy

features

• Solid design control box — Meets NEMA Type 4 & IP30 standard by lab test
• LCD color screen — Real-time status view and easy user interaction
• Breathing indicator light — Shows real-time charging status
• Control button — Adjust max output current & set scheduled charging time
• Water protection gasket — Resists 3-minute direct high-pressure water spray
• TPU cable — 14.76ft, excellent durability, cold resistant to -22°F
• ETL certified — Compliant with North American safety standards

Technical Specifications

Voltage: 240V/208V
Max Output Current: 40A (SS-PC1-100) / 32A (SS-HAY-100-32A)
Max Power: 8kW / 7kW
Frequency: 50/60Hz
Temperature Range: -22°F to 122°F
Humidity: 5–95%, no condensation
Connector: Type 1 (J1772)
Cable Length: 14.76ft (4.5m)
Altitude: ≤2000m (6,562ft)
Cooling: Natural
Safety Standards: ETL, UL2594, CSA C22.2
Scheduling: App / Timer control
Connectivity: Wi-Fi / Bluetooth
Warranty: 2 years

Packing Details

View full details

BLUETTI B300K V2 (B300K2) Expansion Battery

Equipment Type and Primary Applications

The BLUETTI B300K V2 expansion battery adds 2,764.8 Wh of LiFePO₄ energy storage to compatible home backup, off-grid, emergency power, residential, and mobile systems. It is designed for continuous energy storage and integrates with verified BLUETTI host units.

Performance Specifications

  • Nominal capacity: 2,764.8 Wh.
  • Cell chemistry: Automotive-grade lithium iron phosphate (LiFePO₄).
  • Cycle longevity: 4,000+ cycles at nominal depth of discharge.
  • Recharge rate: 80% state of charge in 45 minutes when paired with AC300 or AC500 host stations and a 50A cable.
  • Scalability: Up to 18 batteries, supporting a maximum system capacity of 58 kWh.

Safety Features and Certifications

  • Integrated thermal dissipation architecture helps reduce localized heat accumulation during high-load discharge.
  • Grade-A cell matching supports uniform voltage distribution and reduces thermal-failure risk.

Installation and Maintenance Requirements

Deployment is restricted to verified hosts: Apex300, AC200L, AC200MAX, AC300, and AC500. Installation requires direct chassis interlocking and proprietary data-link cabling. Inspect terminals quarterly and perform host-driven firmware synchronization as scheduled.

Warranty and Service Information

Coverage lasts 36 consecutive months from initial commissioning. Registration extends the warranty period to 48 months.

Branding/References

Manufacturer: BLUETTI. Model identifiers: B300K V2 and B300K2. Integration schematics are available through the official technical catalog.

Differentiators

The optimized 50A parallel charging protocol enables rapid partial-state replenishment, reducing grid-restoration downtime compared with standard expansion modules.