1. Brief Introduction
The BLUETTI B300 is an expansion battery pack with 3072Wh capacity, designed to support the BLUETTI AC200MAX and AC300 series, or the AC200P. The AC200MAX can accommodate up to two B300 battery packs, increasing capacity to 8192Wh. When connected to the AC300, users can link two AC300 units with a Split Phase Box (P030A) to double output power and capacity. This setup can boost continuous power to 6,000W, total capacity to 24.6kWh, and solar input capability to 10.4kW. It can serve as an emergency power center, powering home essentials for over a week, or indefinitely off-grid with sufficient solar panels.
2. Abbreviations
- BMS: Battery Management System
- MPPT: Maximum Power Point Tracking
- DC: Direct Current
- PV: Solar Panel(s) Charging (Photovoltaic)
- Grid: Home Power Supplied by Utility
- T500: 500W Additional Adapter
- DOD: Depth of Discharge
3. Safety Instructions
- ⚠️ DO NOT place the power station near heat sources. Avoid environments with flammable or explosive gases/smoke.
- ⚠️ DO NOT attempt internal repairs by unauthorized personnel. There are no user-serviceable components inside.
- ⚠️ DO NOT operate in wet conditions. If the unit becomes wet, allow it to dry completely before use.
- Ensure proper ventilation while in use and do not obstruct fan openings. Inadequate ventilation may cause permanent damage.
- Do not stack anything on top of the power station during storage or use.
- Avoid exposing the unit to vibrations or impacts during operation, as this may lead to loose internal connections.
- ⚠️ Warning: DO NOT insert foreign objects into any ports of the B300. Use carefully and keep children away.
- In case of fire, use only a dry powder fire extinguisher.
- For safety, use only original chargers and cables designed for the equipment. BLUETTI is not liable for damage caused by third-party equipment, which may void your warranty.
4. BLUETTI App
The BLUETTI App allows remote monitoring of the B300's remaining capacity via Bluetooth when the B300 is connected to the AC300/AC200MAX. For detailed information, please refer to the AC300/AC200MAX User Manual.
5. In the Box
| No. | Standard Accessories | Category | Quantity |
|---|---|---|---|
| 1 | B300 Battery Pack | Battery Pack | 1 |
| 2 | Capacity Fusion Cable | (P090D) | 1 |
| 3 | PV Input Cable | (MC4 - XT90) (10A, MAX 200W) | 1 |
| 4 | User Manual | 1 | |
| 5 | Warranty Card | 1 | |
| 6 | Certificate of QC PASS | 1 |
Description for Accessory 2: Connects B300 to the battery port of AC300 or AC200MAX to extend capacity.
Description for Accessory 3: Used for charging the B300 via solar panels with MC4 ports.
Additional Purchase Accessories
Available for purchase on BLUETTIPOWER.COM:
- Car Charging Cable: (Cigarette Lighter Port - MC4) - For charging the B300 by vehicle, works with cable No. 3.
- Lead-acid Battery Charging Cable: For charging the B300 via a lead-acid battery. Attach clamps to the battery's positive and negative poles; works with cable No. 3.
- D050S Charging Enhancer Kit: Includes D050S, PV, Car, and Lead-acid Charging Cables. D050S enables extra charging methods via the 7909 port (original AC port). Voltage limit: 12-60VDC, Input: 500W Max.
- USB-C to USB-C Cable: Supports 20V/5A, 100W output, compatible with most USB-C devices.
- Cigarette Lighter Port - 5521 Cable: Suitable for 12V devices with 5521 input ports, such as routers or cameras.
- AC Adapter: For charging the B300 via a wall outlet at 500W Max.
6. Let's Get Started
- Power ON/OFF: Long press the power button to turn the unit on or off. The operating LED indicator will light up or turn off accordingly.
- The B300 automatically turns on from the Power Off state when grid charging and/or PV charging voltage is applied to the charging port.
7. Features
The B300 features the following:
- 1. Battery Capacity LED: Displays the remaining capacity of the B300.
- 2. 12V/10A Cigarette Lighter Port: An output port for devices with a corresponding plug, such as a vehicle-use vacuum cleaner.
- 3. USB-C (PD3.0, 100W) Output Port: Can be used with a USB-C to USB-C cable to charge devices like smartphones and laptops up to 100W.
- 4. DC ON / OFF Button: Toggles the DC output function of the B300 on and off.
- 5. USB-A (QC3.0) Output Port: USB-A ports support the QC3.0 protocol for fast charging.
- 6. Power Button: Used to turn the B300 on and off. All functions are closed when the unit is off.
- 7. Battery Extension Port: The port for connecting the B300 to AC300, AC200MAX, or another B300.
- 8. PV Input Port: Used for charging the B300 via solar power, car charging, or lead-acid battery charging.
- 9. Charger Input Port: Used for charging the B300 via a vehicle, additional solar power, lead-acid battery, or AC adapter. Compatible with the D050S.
8. Recharge
8.1 Solar Charging
- Select solar panels with a working voltage between DC 12V-60V.
- Connect the solar panel to the B300 using the PV Input Cable (accessory 3).
- Charging is plug-and-play: it starts automatically after connecting the solar panel, even if the unit is off.
- Maximum solar current: 10A.
- After unplugging the solar charging cable, turn off the B300 within 2 minutes.
Diagram Description: Shows a solar panel connected to the B300 via the PV input cable.
8.2 AC Charging
- Use the T500 500W Adapter to charge the B300 from a wall outlet.
- Estimated fully charging time: 6.6-7.1 hours.
Diagram Description: Shows the T500 adapter plugged into a wall outlet and connected to the B300's charger input port.
8.3 Car Charging
- Use the Car Charging Cable (Cigarette Lighter Port - MC4) to charge the B300 from a car's 12V/24V outlet.
Diagram Description: Shows a car connected to the B300 via the car charging cable and the PV input port.
8.4 Dual Recharge
- Combine solar and AC charging for faster recharge times.
- Estimated fully charging time for dual recharge: 4.9-5.4 hours.
Diagram Description: Shows a solar panel and the T500 adapter connected to the B300 simultaneously.
9. AC300 + B300 Extra Battery Connection
The AC300 can expand its capacity with 1 to 4 B300 battery packs, ranging from 3072Wh to 12288Wh. It supports up to 4 battery packs in parallel. The AC300+B300 system activates once the AC300 is charged.
Connection Steps:
- Step 1: Press Button 01 and connect the battery port of the AC300 with the B300 using the Capacity Fusion Cable (accessory No. 2).
- Step 2: Push Button 02 to lock the cable securely to either the AC300 or B300.
- Step 3: Press the power button on both the AC300 and B300 to activate the system.
Diagram Description: Illustrates the connection process with buttons labeled "Button 01" and "Button 02", showing the locking mechanism for the Capacity Fusion Cable between AC300 and B300.
Example Capacities:
- AC300 + B300 *1 = 3072Wh
- AC300 + B300 *4 = 12288Wh
10. AC200MAX + B300 Extra Battery Connection
The AC200MAX can be expanded with B300 battery packs:
- AC200MAX + B300 *1 = 5120Wh
- AC200MAX + B300 *2 = 8192Wh
11. Technical Specifications
General Specifications
| Specification | Details |
|---|---|
| Model No. | B300 |
| Net Weight | 36.1kg (79.6lbs) |
| Dimensions | 520*320*266mm (20.5*12.5*10.5in) |
| Charge Temperature | 0-40°C (32-104°F) |
| Discharge Temperature | -20-40°C (-4-104°F) |
| Storage Temperature | -20-40°C (-4-104°F) |
| Working Environment Humidity | 10-90% |
| Capacity | 3072-12288Wh (60-240Ah) |
| Battery Type | LiFePO4 |
| Standard Battery Voltage | 51.2VDC |
DC Output
| Port Type | Specifications |
|---|---|
| Cigarette Lighter Port | *1 12VDC, 10A |
| USB-A | *1 3.6-12VDC, 3A, 18W |
| USB-C PD3.0 supported | *1 5-15VDC, 3A; 20VDC, 5A, 100W |
AC Input
| Input Type | Specifications |
|---|---|
| AC (through 7909 via T500) | 500W Max, 58.8VDC, 8A |
PV Input
| Input Type | Specifications |
|---|---|
| MPPT (single) Voltage Limit | 12-60VDC |
| Max. Power of Input | 200W |
| Max Input Current | 10A |
Car Charging
| Input Type | Specifications |
|---|---|
| Input Voltage | 12/24VDC |
| Current | 8.2A |
| Max Input Power | 196.8W |
Battery Port
| Port Type | Specifications |
|---|---|
| Battery Port*2 | 58.8VDC, 80A |
12. FAQ (Frequently Asked Questions)
- How to claim the warranty? Please refer to the warranty card received with the product.
- Can the unit be upgraded? Yes, when the B300 is connected to the AC300, firmware (including ARM, DSP, IOT, and BMS) can be upgraded online via OTA through the BLUETTI APP.
- Can it be charged and discharged simultaneously? Yes, the unit supports pass-through charging for DC outputs.
- Can I use third-party solar panels? Yes, provided they use MC4 connectors and the combined output voltage (series or parallel) is between 12V to 60V, with a maximum of 200W.
13. Storage and Maintenance
- Before storing, turn off the unit and charge it to 50-70% capacity.
- To maintain battery health, discharge and fully charge the unit at least once every 3-6 months to prevent deep discharge.
- Ensure proper ventilation during use and storage, and keep away from combustible materials or gases.
- Do not stack anything on the unit during storage or use.
- Avoid exposing the unit to rain, wet environments, or direct sunlight (32-113°F / 0-45°C). A clean, dry environment is strongly recommended.
- Periodically clean the exterior with dry, non-abrasive cloths to remove dust and debris.
- Keep the unit out of reach of children and pets.
14. Declaration
- Product appearance or specifications may change without prior notice due to material availability or product improvements.
- BLUETTI is not liable for damages caused by force majeure (e.g., fires, natural disasters) or user negligence, misuse, or abnormal conditions.
- No compensation will be provided for damages resulting from the use of non-standard adapters and accessories.
- BLUETTI is not responsible for damages caused by operating the product outside the methods detailed in this manual.
- This unit is not suitable for critical applications such as personal safety equipment, atomic energy devices, aerospace equipment, medical devices, or any equipment requiring highly reliable power sources. BLUETTI is not responsible for accidents, fires, or damages caused by such equipment.
Manufacturer and Contact Information
Manufacturer
Company Name: Shenzhen PowerOak Newener Co.,ltd
Address: F19, BLD No.1, Kaidaer, Tongsha Rd No.168, Xili Street, Nanshan, Shenzhen, China
Company Registration No.: 91440300071761480R
Tel: 0086-755-23705980
E-Mail: feedback@poweroak.net
EU Contact
Company Name: Shenzhen PowerOak Newener Co.,ltd
Address: Lindwurmstr. 114, 80337 Munich, Germany
Company Registration No.: HRB 261852
VAT No.: DE342113007
Tel: 0049 421 87852946
E-Mail: logi@bluetti.de
UK Contact
Company Name: POWEROAK ENERGY UK CO., LTD
Address: Unit 2 Northgate, Bolsover Business Park, Bolsover, S44 6BD
Company Registration No.: 396829822
Tel: 0044-7860 8449 32
E-Mail: poweroak.eu@bluetti.com
