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BLUETTI B300S Expansion Battery – 3,072Wh LiFePO₄ Backup Module

BLUETTI B300S Expansion Battery – 3,072Wh LiFePO₄ Backup Module

  • Massive 3,072Wh LiFePO₄ battery for extended backup power

  • Compatible with AC500 and other BLUETTI modular systems

  • Supports three output options: USB-C PD 100W, 18W USB-A QC3.0, and 12V/10A car port

  • Flexible recharging via AC (500W), solar (500W MPPT), and car (12V/24V)

  • Stackable modular design for increased capacity and seamless integration

  • Built for mobile, residential, and off-grid power expansion

  • Ideal for home backup, overlanding setups, and remote energy systems

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The BLUETTI B300S is a high-capacity 3,072Wh expansion battery designed to pair with BLUETTI’s modular power systems like the AC500. Featuring long-lasting LiFePO₄ chemistry, the B300S ensures over 3,500 charge cycles while maintaining 80% of its capacity—making it a future-proof energy solution for serious off-grid users, RV dwellers, and emergency preppers. With its versatile output ports—including a 100W USB-C PD, 18W USB-A, and 12V/10A car port—the B300S can function independently to charge your essential electronics. It supports up to 500W AC or solar input, as well as 12V/24V car charging, offering you multiple ways to stay powered anytime, anywhere. Whether used as an add-on for longer energy autonomy or a stand-alone power module, the B300S offers unmatched flexibility and reliability.
Specifications:
  • Battery Capacity: 3,072Wh
  • Battery Chemistry: LiFePO₄
  • Cycle Life: 3,500+ cycles (to 80% capacity)
  • Output Ports:
    • 1 × USB-C PD3.0 (100W)
    • 1 × USB-A QC3.0 (18W)
    • 1 × Car Port (12V/10A)
  • Input Options:
    • AC Charging: 500W Max
    • Solar Charging: 500W Max (MPPT)
    • Car Charging: 12V/24V 8A
  • Dimensions: 519.8mm × 319.8mm × 263mm (20.5in × 12.5in × 10.5in)
  • Weight: 38kg (83.8lbs)
  • Certifications: UL, CE, FCC, PSE, EMC, ROHS, UN38.3
Typical Applications:
  • Battery expansion for AC500 and other BLUETTI systems
  • Off-grid camping and long-distance overlanding
  • Backup power for homes, medical devices, and workstations
  • Charging electronics independently during power outages
Packing List:
  • 1 × BLUETTI B300S Expansion Battery
  • 1 × User Manual & Warranty Card
  • 1 × Solar/AC Charging Cable
About Manufacturer:
BLUETTI is a global leader in clean energy storage and portable power technology. Headquartered in China, BLUETTI specializes in developing next-generation solar power stations, home energy storage systems, and eco-friendly battery backups. With over a decade of R&D expertise, BLUETTI is committed to providing reliable, efficient, and sustainable energy solutions for homes, outdoor adventures, emergency preparedness, and off-grid applications. Their award-winning LiFePO₄ technology, intuitive mobile app, and scalable energy systems serve customers in more than 70 countries.

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