BLUETTI B300S Expansion Battery – 3,072Wh LiFePO₄, Modular for AC500

The BLUETTI B300S Expansion Battery is a high-capacity 3,072Wh LiFePO₄ module designed exclusively for the AC500 power station. Built for flexibility, safety, and long-lasting performance, the B300S extends your AC500 system to handle whole-home backup, off-grid living, or long-duration power outages.

With 3,500+ life cycles to 80% capacity, the B300S delivers reliable, sustainable power storage. It also functions as a standalone battery pack, equipped with USB-C, USB-A, and a 12V car port for charging essential devices on the go. Combined with multiple expansion batteries, the B300S allows the AC500 to scale up to a massive 36,864Wh system capacity (2× AC500 + 12× B300S).

Key Features

– Large-Capacity Battery – 3,072Wh LiFePO₄ battery with 3,500+ life cycles.
– Exclusive Compatibility – Designed for the AC500 power system (not compatible with other models).
– Flexible Expansion – Supports up to 6× B300S modules per AC500; mix-and-match with B300 (up to 4 total if combined).
– Standalone Ports – Equipped with 100W USB-C, 12V/10A car port, and 18W USB-A for direct charging.
– Versatile Recharging – Supports AC, solar (500W max), and car charging; can combine inputs for up to 1,000W with D050S DC enhancer.
– Temperature Adaptive Function – Operates even in freezing conditions by self-heating to maintain performance.
– Safe & Certified – Built-in BMS, MPPT charge controller, UL, FCC, CA Prop 65 certifications.

Product Specifications

– Battery Capacity: 3,072Wh (51.2V, 60Ah)
– Chemistry: LiFePO₄ (Lithium Iron Phosphate)
– Life Cycles: 3,500+ (to 80% capacity)
– Outputs: 1× USB-C (100W), 1× USB-A (18W), 1× 12V/10A DC car outlet
– Inputs: 500W AC, 500W solar (VOC 12–60VDC, 10A), 12V/24V car input, max 1,000W with D050S enhancer
– Weight: 83.8 lbs (38 kg)
– Dimensions: 20.5 × 12.5 × 10.5 in (52 × 32 × 26.6 cm)
– Operating Temp: -4℉ to 104℉ (-20℃ to 40℃)
– Simultaneous Charge/Discharge: Yes
– Split-Phase Bonding: Yes, with AC500

Included in Package

– BLUETTI B300S Expansion Battery
– Charging Cable(s)
– User Manual

User Manual
Download BLUETTI B300S Product Manual (PDF)

Warranty
The BLUETTI B300S is covered by the manufacturer’s limited warranty:
– Portable Power Stations: 24–72 months
– Home Backup Systems: 48–60 months
– Solar Panels & Accessories: 12 months

Warranty applies with proof of purchase from authorized retailers. Exclusions include misuse, unauthorized modifications, or external damage.