Expansion Battery · 3,072Wh
Adaptable Recharge Options
With the BLUETTI B300S, you have the flexibility of recharging via AC, solar, or your car, allowing for a maximum input rate of 1,000W. By combining AC with solar or car input, you can replenish the B300S in less than 3.5-4 hours. Note: The D050S DC charging enhancer is required for the maximum input rate.

Multi-Purpose Power Solution
From smartphones to refrigerators, the BLUETTI B300S offers specific outputs tailored to your needs. With a 100W USB-C, 12V/10A cigarette lighter, and 18W USB-A, you can power a variety of devices seamlessly.
Efficient Performance in Chilly Conditions
Don't let the cold slow you down. Thanks to its Temperature Adaptive Function, the B300S heats up automatically, ensuring responsive performance even on freezing days.
Expandable Energy Capacity
Designed as the perfect companion battery pack to the AC500, the B300S boasts a robust 3,072Wh capacity, enduring over 3,500 cycles to 80% of its original capacity. Link up to 6 B300S with the AC500 for a staggering 18,432Wh powerhouse, ample to see you through prolonged power outages.

| Capacity | 3,072Wh (51.2V, 60Ah) |
| Cell Chemistry | LiFePO4 (Lithium Iron Phosphate) |
| Life Cycles | 3,500+ Cycles to 80% Original Capacity |
| Shelf-life | Recharge to 80% Every 3-6 Months |
| Management System | MPPT Charge Controller, BMS, etc. |
| USB-C Port | 1 x 100W Max. |
| USB-A Port | 1 x 18W |
| DC Outlets | 1 x 12V/10A (Car Outlet) |
| AC Input | 500W Max. |
| Solar Input | 500W Max., VOC 12-60VDC, 10A |
| Car Input | 12/24V from Cigarette Lighter Port |
| Maximum Input | 1,000W, with D050S DC Charging Enhancer |
| 240V Split Phase Bonding | Yes, Works with AC500 |
| Simultaneous Recharge & Discharge | Yes |
| Weight | 83.8lbs (38kg) |
| Dimensions (LxWxD) | 20.5 x 12.5 x 10.5in (52 x 32 x 26.6cm) |
| Operating Temperature | -4℉-104℉ (-20℃-40℃) |
| Storage Temperature | -4℉-104℉ (-20℃-40℃) |
| Certification | UL2743, UKCA, RCM, PSE, FCC, CE |



Free shipping on all orders within the mainland US (Hawaii, Alaska and overseas territories excluded - a freight forwarder is required). Orders ship directly from our brand partners' warehouses across the U.S. Order confirmation is emailed immediately; if an item is unexpectedly backordered we notify you before your card is charged. In-stock items are processed within 1-4 business days (cut-off 4:00 PM EST), transit is 3-6 business days, and tracking is emailed within 24 hours of shipment. Typical delivery is 4-10 business days from purchase. Minimum order value is $69.
You have 30 days from the delivery date to initiate a return (35 days for orders placed Nov 25-30 and Dec 25-31). Items must be unused, in original packaging with tags attached, and returns require prior authorization from our team.
To start a return: +1 (307) 317-7213, hello@ecosolarkits.com, or live chat. Read the full return and refund policy