The BLUETTI B300S is the next-generation expansion powerhouse, specifically engineered to complement the AC500 system. With a massive 3072Wh capacity and an industry-leading self-heating function, this battery ensures your power stays reliable even in the harshest winter conditions.
The BLUETTI B300S Expansion Battery is a pinnacle of energy storage technology, designed for those who refuse to be limited by their environment. As the primary building block for the AC500 modular system, the B300S provides more than just extra runtime; it offers professional-grade resilience. Whether you are building a full-scale home backup system or a high-performance off-grid power hub for a mountain cabin, the B300S delivers consistent, clean power regardless of the outside temperature.
What truly distinguishes the B300S expansion battery is its responsive self-heating function. Standard lithium batteries often struggle to charge or discharge efficiently in cold climates; however, the B300S detects freezing temperatures and activates its internal heating mechanism. This ensures that even on the coldest winter days, your system remains fully operational and efficient. Combined with ultra-stable LiFePO4 (LFP) chemistry, the B300S is rated for over 3,500 life cycles, guaranteeing a decade-plus of reliable service.
While it is the perfect partner for the AC500, the B300S can also operate as a “Standalone Power Station.” It features its own set of high-speed outputs, including a 100W USB-C PD port for laptops, a USB-A port for mobile devices, and a 12V/10A car port for portable appliances. This versatility makes it an ideal independent energy source for camping trips or field assignments where you need a high-capacity, portable battery without the need for a full inverter unit.
The B300S is designed to grow with your energy demands. When paired with the BLUETTI AC500, you can stack up to six of these modules together, creating a “maximum of 18,432Wh capacity.” This industrial-level reservoir is capable of powering essential home loads, high-draw workshop tools, or electric vehicles for days on end. For the user who prioritizes safety, smart technology, and all-weather performance, the BLUETTI B300S is the ultimate expansion for the road ahead.
| Connectivity | USB-C |
| Wattage | 100W |
| Brand | BLUETTI |
| SKU / Part No. | B300S-UN-GY-BL-02 |
