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| Method | Delivery Time | Cost |
|---|---|---|
| Shipping | Shown during checkout | Calculated at checkout |
| Returns | See store policy | Terms vary by store |
Check the product page, checkout and store policies for the terms that apply to your order.
| Method | Delivery Time | Cost |
|---|---|---|
| Shipping | Shown during checkout | Calculated at checkout |
| Returns | See store policy | Terms vary by store |
Check the product page, checkout and store policies for the terms that apply to your order.
The B300K adapts to your life, whether you're safeguarding your home during outages or powering an off-grid adventure. Stack multiple B300K batteries, or mix and match with B300, and B300S models for a customized energy solution that ensures you're never caught without power, no matter where you are.
*Need P150D to P090D cable to connect the AC500.


The B300K seamlessly integrates with AC200L, AC200MAX, AC300, and AC500* power stations, giving you the flexibility to scale your energy setup as your needs grow. Whether you're prepping for more power at home or gearing up for your next adventure, the B300K has you covered.
* A P090D to P150D cable is required for connecting with AC500 and sold separately.

The B300K is designed to excel in safety and reliability. Featuring square LiFePO₄ batteries and cutting-edge AI-BMS technology, together with a robust aluminum casing, advanced wireless components, and efficient cooling fan ensure this battery stands the test of time, giving you a power source you can count on in any situation.

When paired with the AC300 or AC500, this battery charges up to 80% in just 45 minutes, so you can get back to what matters without any significant interruption, your work, activities, or emergencies ...whether you're at home or on the go.

Specifications:
BATTERY INFO
Capacity
2,764.8Wh (51.2V, 54Ah)
Type
LiFePO₄ (Lithium Iron Phosphate)
Life Cycles
4,000+ Cycles to 80% Original Capacity
OUTPUT
USB-A Port
12W Max., 5V / 2.4A
GENERAL
Weight
Approx. 29.5kg (65.04lbs)
Dimensions (L x W x D)
525 × 327 × 209mm (20.67 × 12.87 × 8.23in)
Charging Temperature
0°C to 40°C (32°F to 104°F)
Discharging Temperature
-20°C to 40°C (-4°F to 104°F)
Storage Temperature
Up to 1 month: -20°C to 40°C (-4°F to 104°F) Up to 6 months: -20°C to 25°C (-4°F to 77°F)
Working Humidity
5% to 95%RH
Charging Current
60A Max. (Current may decrease outside specified temperatures)
Discharging Current
70A Max.
2 × Expansion Port
58.4VDC Max., 90A Max.
Warranty
4 Years
The BLUETTI B300K Expansion Battery | 2,764.8Wh is currently on sale for $2499.00 (originally $2899.00, save 14%).
The BLUETTI B300K Expansion Battery | 2,764.8Wh is listed in our OV Sale category. See the product description, current options and availability on this page.