BLUETTI B300 Portable Power Station User Manual

1. Brief Introduction

The B300 is an extension battery pack with 3072Wh capacity, designed to support BLUETTI AC200MAX and AC300 series, or AC200P. The AC200MAX can accommodate up to two B300 battery packs for a total capacity of 8192Wh. When connected to the AC300, users can link two AC300 units with the Split Phase Box (P030A) to achieve double the output power and capacity. This setup can provide up to 6,000W of continuous power, 24.6kWh total capacity, and a 10.4kW solar input capability. It serves as an emergency power center for home essentials for over a week, or can power an entire house off-grid indefinitely with sufficient solar panels.

2. Abbreviation

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 Instruction

DO NOT place the power station near heat sources. It is prohibited to place the equipment in an environment with flammable, explosive gas, or smoke. Operation in such environments is also prohibited.
DO NOT attempt to replace the internal battery or any other component of the equipment by anyone other than authorized personnel. There are no user-serviceable components.
DO NOT operate in wet conditions. If the equipment becomes wet, allow the unit to dry completely before use.
Ensure proper ventilation during use and do not obstruct fan openings. Inadequate ventilation may cause permanent damage to the equipment.
DO NOT stack anything on top of the power station during storage or use.
DO NOT move the unit while operating, as vibrations and sudden impacts may lead to poor connections to the internal hardware.
Warning: DO NOT insert foreign objects into any ports of the B300. Use it carefully and keep children away from it.
In case of fire, only a dry powder fire extinguisher is suitable for the product.
For safety purposes, use the original charger and cables designed for the equipment. BLUETTI is not liable for damage caused by third-party equipment, which may also render your warranty invalid.

4. BLUETTI App

The BLUETTI App allows remote viewing of the B300's remaining capacity, but only when the B300 is connected to an AC300 or AC200Max. For detailed information, please refer to the AC300/AC200Max User Manual.

Visual Description: A smartphone screen displaying the BLUETTI app interface with a welcome message, options to connect to a BLUETTI device or log in to a BLUETTI account.

5. In The Box

Standard Accessories

No.	Category	Quantity
1	B300 Battery Pack	1
2	Capacity Fusion Cable (P090A) Connect B300 to the battery port of AC300 or AC200Max to extend the capacity.	1
3	PV Input Cable (MC4 - XT90) (10A, MAX 200W) Charging B300 via solar panels with MC4 ports.	1
4	User Manual Please read this manual before use and follow its guidance, keep this manual for future reference.	1
5	Warranty Card Please keep this Warranty Card properly.	1
6	Certificate of QC PASS	1

Additional Purchase Accessories (Sold on BLUETTIPOWER.COM)

No.	Category
	Optional Input Cable
	Car Charging Cable (Cigarette Lighter Port - MC4) Charging B300 by vehicle, works with cable No.3.
	Lead-acid Battery Charging Cable Charging B300 via lead-acid battery; place clamps on corresponding positive/negative poles of lead-acid battery, works with cable No.3.
	D050S Charging Enhancer Kit (Including D050S, PV, Car, Lead-acid Charging Cable) D050S - for extra charging methods on 7909 (original AC) port. Voltage limit: 12-60VDC, Input: 500W Max.
	Optional Output Cable
	USB-C to USB-C Cable Supports 20V/5A, 100W power output, compatible with most appliances using a USB-C port.
	Cigarette Lighter Port - 5521 Cable Suitable for 12V devices with 5521 input ports, such as routers, cameras, etc.
	Optional AC Adapter
	AC Adapter Charging B300 via wall outlet at 500W Max.

6. Let's Get Started

Power ON/OFF: Long press the power button to turn the unit ON/OFF. The LED indicator will light up/off accordingly.
The B300 will automatically turn on from a Power Off state when either grid charging or PV charging voltage is applied to the charging port.

7. Features

Visual Description: An illustration of the BLUETTI B300 unit with numbered ports and buttons.

1. Battery Capacity LED: Shows the remaining capacity of the B300.
2. 12V/10A Cigarette Lighter Port: Output port for devices with corresponding plugs, such as vehicle-use vacuums.
3. USB-C (PD3.0, 100W) Output Port: Can be used via a USB-C to USB-C cable to charge most devices (e.g., Pixel Phone, Macbook Pro) at up to 100W Max.
4. DC ON / OFF Button: Turns the output function of the B300 ON/OFF.
5. USB-A (QC3.0) Output Port: USB-A ports support QC3.0 protocol.
6. Power Button: Turns the B300 ON/OFF. All functions will be closed when the unit is off.
7. Battery Extension Port: The port to connect the B300 with AC300/AC200MAX/B300.
8. PV Input Port: For charging the B300 via solar power, car charging, or lead-acid battery charging.
9. Charger Input Port: For charging the B300 via vehicle, extra solar power, lead-acid battery, or AC adapter. Suitable for D050S.

8. Recharge

8.1 Solar Charging

Choose a solar panel with a working voltage of DC 12V-60V.
Connect the solar panel to the B300 using the solar charging cable (accessory 3).
Plug and play charging: Charging will start automatically after connecting the solar panel, even if the unit is in the OFF state.
Max. current of the solar: 10A.
The B300 should be turned off 2 minutes after unplugging the solar charging cable from the B300.

Visual Description: Diagram showing the B300 unit connected to a PV Input Cable, which is then connected to an SP200 Solar Panel.

8.2 AC Charging

Visual Description: Diagram showing the B300 unit connected to a T500 500W Adapter, which is plugged into a wall outlet.

The estimated fully charging time for the adapter is 6.6-7.1 Hours.

8.3 Car Charging

Visual Description: Diagram showing the B300 unit connected via its PV Input Cable to a Car Charging Cable (Cigarette Lighter Port - MC4), which is plugged into a car.

8.4 Dual Recharge

Visual Description: Diagram showing the B300 unit connected via a PV Input Cable to an SP200 Solar Panel, and also connected via a T500 500W Adapter to a wall outlet.

The estimated fully charging time for Dual Recharge is 4.9-5.4 Hours.

9. AC300 + B300 Extra Battery Connection

The AC300 can extend its capacity by 1-4 B300 battery packs, ranging from 3072Wh to 12288Wh. It supports up to 4 battery packs in parallel.

The AC300+B300 system will be activated when the AC300 has been charged.

Visual Description: Diagram showing an AC300 unit connected to one B300 unit via a cable, indicating a total capacity of 3072Wh.

Connection Steps:

Press Button 01 and connect the battery port of AC300 with B300 using the Capacity Fusion Cable (accessory No.2).
Push Button 02 to LOCK the cable with either the AC300 or B300.
Press the power button of both the AC300 and B300.

Visual Description: Close-up diagrams of Button 01 and Button 02 on the AC300/B300 units. Further diagrams illustrate the connection process: First Step shows the cable being inserted and locked (Barb down, Lock 1/2), and Second Step shows the final locked state before the units are powered on.

10. AC200MAX + B300 Extra Battery Connection

Visual Description: Diagram showing an AC200MAX unit connected to one B300 unit, indicating a total capacity of 5120Wh.

Visual Description: Diagram showing an AC200MAX unit connected to two B300 units, indicating a total capacity of 8192Wh.

11. Technical Specifications

General Specs

Model No.	B300
Net Weight	36.1kg (79.6lbs)
Dimensions	520320266mm (20.512.510.5in)
Charge Temperature	0-40℃ (32-104 °F )
Discharge Temperature	-20-40℃ (-4-104 °F )
Storage Temperature	-20-40℃ (-4-104 °F )
Working Environment Humidity	10-90%
Capacity	3072-12288Wh (60-240Ah)
Battery Type	LiFePO4

DC Output

Standard Battery Voltage	51.2VDC
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

AC (through 7909 via T500)	500W Max
Specs	58.8VDC, 8A

PV Input

MPPT (single) Voltage Limit	12-60VDC
Max. Power of Input	200W
Max Input Current	10A

Car Charging

Input Voltage	12/24VDC
Current	8.2A
Max Input Power	196.8W

Battery Port *2

Specs	58.8VDC, 80A

12. FAQ (Frequently Asked Questions)

How to claim the warranty?
Please refer to the warranty card received from where you ordered the product.
Can the unit be upgraded?
When the B300 is connected to the AC300, the firmware (including ARM, DSP, IOT, and BMS) can be upgraded online via OTA through the BLUETTI APP.
Can it be charged and discharged at the same time?
Yes, the unit supports pass-through charging for DC outputs.
Can I use third-party solar panels to charge the unit?
Yes, third-party solar panels can be used as long as they utilize MC4 connectors and the combined output voltage (in series or parallel) is between 12V to 60V, with a maximum of 200W.

13. Storage and Maintenance

Please turn off the unit and charge it to 50-70% capacity before storing it.
To preserve battery health, discharge and fully charge the unit at least once every 3-6 months.
Ensure proper ventilation during use or storage and keep away from any combustible materials or gases.
Do not stack anything on top of the unit during storage or use.
Avoid exposing the unit to rain or wet environments, and direct sunlight (32-113 °F, 0-45℃). A clean and dry environment is strongly recommended.
Use dry, non-abrasive cloths to clean the exterior from dust and debris periodically.
Keep the unit away from children and pets.

14. Declaration

Some changes may occur without notice, such as external appearance or specifications, due to material supply availability or hardware improvements over time.
BLUETTI shall not be liable for any damage caused by force majeure events such as fires, typhoons, floods, earthquakes, or due to user's intentional negligence, misuse, or other abnormal conditions.
No compensation for damages will be made for utilizing non-standard adapters and accessories.
BLUETTI is not liable for any damages caused by operations of the product outside of the usage methods detailed in this manual.
This unit is not suitable for use with equipment or machines involving: Personal safety, atomic energy devices, aerospace devices, medical devices, or any equipment or machines requiring highly reliable power sources. BLUETTI is not responsible for accidents, fires, wrongful or negligent actions caused by such equipment or machines that result in damage.

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