What is the Bluetti B300K Expansion Battery used for?

The Bluetti B300K Expansion Battery is designed for off-grid power systems, home backup solutions, and renewable energy setups. It stores energy from solar panels or grid power and delivers reliable electricity during outages or off-grid use.

What is the capacity of the Bluetti B300K Expansion Battery?

The Bluetti B300K offers a high storage capacity of 2764.8Wh, making it suitable for running essential appliances and devices for extended periods during power interruptions.

What battery technology does the Bluetti B300K use?

The Bluetti B300K uses LiFePO4 (Lithium Iron Phosphate) battery technology, which provides enhanced safety, stable performance, and a long lifespan compared to traditional lithium-ion batteries.

How long does the Bluetti B300K battery last?

The battery is rated for up to 4000 charge cycles, ensuring long-term reliability and durability for daily use, backup power, and renewable energy systems.

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Bluetti B300K EXPANSION BATTERY P-B300K-UN-GY-BL-010

Bluetti B300K Expansion Battery 2764.8Wh

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Bluetti B300K EXPANSION BATTERY P-B300K-UN-GY-BL-010

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$1,867.93 USD

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Bluetti B300K EXPANSION BATTERY P-B300K-UN-GY-BL-010 $1,867.93

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Product Category Battery

What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

Bluetti B300K EXPANSION BATTERY P-B300K-UN-GY-BL-010

The Bluetti B300K Expansion Battery (P-B300K-UN-GY-BL-010) is a powerful, modular, and expandable energy storage solution designed for off-grid systems, home backup, and renewable energy applications. With a 2764.8Wh capacity and LiFePO4 technology, this battery offers a long lifespan (up to 4000 cycles) and fast charging capabilities. It’s ideal for powering a wide range of devices and ensures reliability during power outages or off-grid living.

Product Features

High Capacity

With a 2764.8Wh capacity, the B300K provides significant power storage to run essential appliances and devices during an outage.

LiFePO4 Technology

Utilizes LiFePO4 batteries for enhanced safety, longer lifespan, and stable performance, offering up to 4000 charge cycles.

Modular & Expandable

The B300K is a modular battery that can be expanded to meet growing energy needs, allowing for versatile configurations.

Fast Charging

Features fast charging capabilities, enabling quick recharging and ensuring continuous availability of stored energy.

How It Works

The Bluetti B300K Expansion Battery stores energy generated from solar panels or grid power and delivers it when needed. This battery can be connected to compatible Bluetti systems and used in a variety of off-grid, backup, and renewable energy applications. Its modular nature allows users to add additional batteries to scale up their energy storage capacity as needed.

Energy Storage

The battery stores DC power and provides a stable source of energy for your appliances or systems during power outages.

Modular System

Multiple B300K units can be connected together to increase storage capacity, providing flexibility for large off-grid systems or home backup setups.

Specifications

Capacity	2764.8Wh
Battery Type	LiFePO4
Cycle Life	4000 Cycles
Charging Time	Fast Charging
Dimensions	19.3" x 10.6" x 13.6"
Weight	79 lbs
Warranty	5 Years

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Bluetti B300K EXPANSION BATTERY P-B300K-UN-GY-BL-010

Product Features

High Capacity

With a 2764.8Wh capacity, the B300K provides significant power storage to run essential appliances and devices during an outage.

LiFePO4 Technology

Utilizes LiFePO4 batteries for enhanced safety, longer lifespan, and stable performance, offering up to 4000 charge cycles.

Modular & Expandable

The B300K is a modular battery that can be expanded to meet growing energy needs, allowing for versatile configurations.

Fast Charging

Features fast charging capabilities, enabling quick recharging and ensuring continuous availability of stored energy.

How It Works

Energy Storage

The battery stores DC power and provides a stable source of energy for your appliances or systems during power outages.

Modular System

Multiple B300K units can be connected together to increase storage capacity, providing flexibility for large off-grid systems or home backup setups.

Specifications

Capacity	2764.8Wh
Battery Type	LiFePO4
Cycle Life	4000 Cycles
Charging Time	Fast Charging
Dimensions	19.3" x 10.6" x 13.6"
Weight	79 lbs
Warranty	5 Years

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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

Jacob B

Easy Process, Genuine Support

Patrick B

Off Grid Solar Purchase

James Martin

Highly Recommend

Brian H

Solar Kit for Mobile Work Van

Keith S

Best Tech Support

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