BLUETTI B300 Expansion Battery | 3,072Wh

C$3,998.00 C$5,598.00 - C$1,600.00

  • Features with a 100W USB-C, a 12V/10A car output and a USB-A ports, you can use the B300 as a portable power station.
  • The smart MPPT inside of the B300 enables it to recharge quickly through solar power at a 200W maximum loading scale.
  • You can also recharge it by wall socket, car charging or lead-acid battery.

Product Model:

Local Shipping

4-year Hassle Free

Lifetime Customer

30 Days Price Match Guarantee

BLUETTI guarantees that we will refund you the difference if you find a lower price from us within 30 days of your purchase.

Notes:(To get the price differences for your order, the following requirements must be met)

1. Valid purchase history within 30 days.

2. Take a screenshot of the lower price and email us, we'll refund the differences as soon as we confirmed it.

Flexible Recharging

You can recharge BLUETTI B300 quickly with 200W Max. solar input thanks to the built-in MPPT. Besides, it also supports AC, car, and lead-acid battery charging. The car and lead-acid battery charging need a D050S.

Versatile Power Source

You can power your smartphones, laptops, fans, lights, refrigerators, microwave ovens, and so on with specific output port - the 100W USB-C, 12V/10A cigarette lighter, and 18W USB-A output ports.

Expandable Battery Pack

B300 has 3,072Wh capacity and over 3,500 life cycles with the LiFePO₄ battery cells, offering up to 80% of original capacity. Moreover, it will double, triple, even quadruple the total capacity with BLUETTI AC200MAX, AC200P, or AC300 series.

Home Backup and Trip Power Bank

Whether in a family gathering or camping trip, B300 will serve as your backup power supply or power bank. It powers your home and camping necessities well, and all you need to do is enjoy the good times.

Never Run Out of Power

Suitable for various occasions

You may also like




3,072Wh (51.2V, 60Ah)

LiFePO₄ (Lithium Iron Phosphate)

Life Cycles:
3500+ Cycles to 80% Original Capacity

Recharge to 80% Every 3-6 Months

Management System:
MPPT Controller, BMS, etc.


USB-C Port:
1 x 100W Max.

USB-A Port:
1 x 18W USB-A

12V DC Outlet*:
1 x 12V/10A (Car Outlet)
*All Regulated.


AC Input:
500W Max.

Solar Input:
200W Max., VOC 12-60VDC, 10A

Car Input:
12/24V from Cigarette Lighter Port

Max Input:
700W, With AC Adatper + Solar Input Simultaneously


≈ 6.5~7 Hours at 500W

≈ 15.5~16 Hours at 200W
(With prime sunshine, ideal orientation and low temperature)

12V/24V Car Outlet (100W/200W:
≈ 30 or 15 Hours

AC + Solar:
≈ 5 Hours at 700W
(With prime sunshine, ideal orientation and low temperature)

Solar + Solar:
≈ 5 Hours at 700W (D050S DC Charging Enhancer REQUIRED)

Dual AC:
≈ 5 Hours at 700W (Extra adapter REQUIRED)


240V Split Phase Bonding:
Yes, work with AC300

Pass-through Charge:

79.6lbs (36.1kg)

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℃)


In The Box

Optional Accessories

BLUETTI PV120/PV200(Solar Panel)

Learn more >

T500 Adapter (AC Input)

Learn more >

User Manual

BLUETTI B300 Expansion Battery | 3,072Wh User Manual

Download Download Now >

Customer Reviews

Based on 23 reviews
Gerard Ouellet

I am very happy to have 4 batteries of 3072Wh

With its batteries I complete all the electrification of my garden shed.

Thank you Bluetti!

Set up for full time living in 32 foot 30 amp trailer.

Purchased two of these to max out storage of AC200Max.
I am now upgrading to the AC 300, mainly because of the ability to expand solar to 2400 watts.
I also like the flexible expand ability of the AC300.

Gerald Mcknight

I need about 1100 watts of power for my off grid home each battery is providing about two and a half hours each so I'm quite happy.

Pierre Gagné
Fort utile lors de pannes électriques

J'en ai fait l'essai lors d'une panne de 28 hres dans mon quartier le 4 décembre dernier et je suis très satisfait!

Edwin Ochmanek
So far so good, but

I purchased two B300’s to pair with my AC200 Max. So far, I have only done one trial and aside from a bit of off gassing (particularly roughly 1/2 through the discharge) everything went well.
The only issues are that one of the connectors is very hard to get to click in all the way (I got it, but it took a lot of effort). The others are smooth and easy, so this is a bit of a concern for longevity, but on the other hand perhaps it will wear in and not pose a problem (though I don’t think my wife coud do it).
The other issue is a design flaw. The ports on the B300 units are on the right hand side where they are on the left hand side of the AC200 Max. As the cables are not long enough to reach around, this means that the units need to be facing different directions; very odd to say the least.
Lastly, the app cannot trusted to give an accurate reading of the power that is left and makes it impossible to identify which unit is which.
These are relatively minor issues and would not stop me from recommending this setup. I look forward to using it in more real word situations at our cabin in the future.



A useful guide to making the most of it all.

Product Application

B300 Battery Module Tutorial

How to connect AC300 with B300 Battery Modules?

How to connect AC200MAX with B230 or B300 battery modules?