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Bluetti B300K2 Expansion Battery For Home Backup Power

Bluetti B300K2 Expansion Battery For Home Backup Power

$1,167.60 USD
$1,167.60 USD
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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

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BLUETTI B300K V2 Expansion Battery

Expansion battery module engineered for continuous off-grid power storage and emergency backup energy systems across residential and mobile environments.

Performance Specifications:
  • Nominal capacity: 2,764.8 Wh
  • Cell chemistry: Automotive-grade LiFePO₄
  • Cycle longevity: 4,000+ cycles at nominal depth of discharge
  • Fast recharge: 45 minutes to 80% SOC with AC300/AC500 host stations via 50A cable
  • Parallel scalability: Stacks up to 18 units for a maximum 58 kWh system total

Safety Features and Certifications:
  • Integrated thermal dissipation architecture reduces localized heat accumulation during high-load discharge
  • Grade-A cell matching ensures uniform voltage distribution and minimizes thermal failure risks

Installation and Maintenance Requirements:
  • Deployment restricted to verified hosts: Apex300, AC200L, AC200MAX, AC300, AC500
  • Mounting requires direct chassis interlocking and proprietary data-link cabling
  • Scheduled upkeep entails quarterly terminal inspection and host-driven firmware synchronization

Warranty and Service Information:
  • Coverage spans 36 consecutive months from initial commissioning, upgradeable to 48 months upon registration

Branding/References:
  • Manufacturer: BLUETTI
  • Model identifier: B300K V2 (B300K2)
  • Integration schematics available through official technical catalog

Differentiators:
  • Optimized 50A parallel charging protocol delivers rapid partial-state replenishment, substantially reducing grid-restoration downtime compared to standard expansion modules.