Bluetti B300K Expansion Battery | 2,764.8Wh Capacity | Battery Module

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The New BLUETTI Expansion Battery B300K - 2,764.8Wh 

Introducing the newest BLUETTI B300K Expansion Battery, your ultimate power companion designed to meet the demands of modern living and unforeseen outages. Boasting a massive 2,764.8Wh capacity and an impressive 4,000+ life cycles, this battery ensures you have reliable energy whenever you need it.

Power Expansion for Every Scenario

Whether you're securing your home during power outages or fueling off-grid adventures, the BLUETTI B300K adapts seamlessly to your needs. Stack multiple B300K batteries, or combine them with B230, B300, and B300S models to craft a customized power setup. With the B300K, you'll never be without reliable energy, no matter where life takes you.

Enhanced Compatibility for Endless Possibilities

The B300K is designed to seamlessly integrate with AC200L, AC200MAX , AC300 , and AC500 power stations, offering you the flexibility to scale your energy setup as your needs evolve. Whether you're preparing to boost power at home or gearing up for your next big adventure, the B300K is ready to deliver.

Please note: A P090D to P150D cable is required for connecting with the AC500 and is sold separately.

Engineered for Durability and Protection

The B300K is built with a commitment to safety and reliability. Equipped with square LiFePO₄ batteries and cutting-edge AI-BMS technology, this battery is designed to deliver outstanding performance.

Its robust aluminum casing, advanced wireless components, and efficient cooling fan work together to ensure long-lasting durability. With the B300K, you have a dependable power source that stands the test of time, ready to perform in any situation.

Rapid Charging When You Need It Most

Pair the B300K with the AC300 or AC500, and experience the convenience of fast charging—reaching 80% in just 45 minutes. This means you can quickly get back to what matters, whether it's work, activities, or emergencies, without any significant interruptions.

Whether you're at home or on the go, the B300K ensures you're always powered up and ready.

A Versatile Power Hub with Standout Performance

The B300K is more than just an add-on—it's a standalone power source that excels in versatility. Equipped with a USB-A port, it's perfect for keeping your essentials like smartphones, tablets, or fans charged.

Whether you need to make an urgent call, share special moments with friends, or stay cool while camping, the B300K ensures that power is always within reach, no matter where life takes you.

Bluetti B300K Expansion Battery Specs

BATTERY INFORMATION

Model
B300K
Battery Capacity
2,764.8Wh (51.2V, 54Ah)
Battery Type
LiFePO₄ (Lithium Iron Phosphate)
Life Cycles
4,000+ Cycles to 80% Original Capacity
OUTPUT
USB-A
12W Max., 5V / 2.4A

GENERAL SPECIFICATIONS

Net Weight
Approx. 29.5kg (65.04lbs)
Dimensions (L × W × H)
525 × 327 × 209mm (20.67 × 12.87 × 8.23in)
Charging Temperature
0°C to 40°C (32°F to 104°F)
Discharging Temperature
-20°C to 40°C (-4°F to 104°F)
Storage Temperature
Up to 1 month: -20°C to 40°C (-4°F to 104°F)
Up to 6 months: -20°C to 25°C (-4°F to 77°F)
Working Humidity
5% to 95%RH
Charging Current
60A Max.
(Current may decrease outside specified temperatures)
Discharging Current
70A Max.
2 × Expansion Port
58.4VDC Max., 90A Max.

What's In The Box?

Click the link to download the Bluetti B300K Manual.

BLUETTI B300K Expansion Battery Module Overview

Order Confirmation

Once your order is placed, you'll receive a confirmation email, verifying that we've received your order and authorized payment to begin processing.

Processing Time: Allow 1-3 business days for us to confirm your order before it's packed and prepared for shipment. If there are any delays, we will contact you via phone call and or email immediately.

Handling Time: After confirmation, your order is packed and prepared to ship from the warehouse. Handling time varies based on the size, weight, and shipping method. The specific handling time details are listed on each product's page.

Shipping & Transit

All orders over $100 ship free. Orders under $100 ship for a flat rate of $11.99.

Small or Lightweight Items: Shipped via carriers like UPS, FedEx, or USPS, these items usually ship quickly and may not require a signature upon delivery.

Heavy or Bulky Items: Large equipment or multi-item orders will be delivered via Less Than Truckload (LTL) Freight Carriers to your curbside unless otherwise specified by a Power Gear Pros representative.

Leaving the Warehouse: In-stock items are picked and packed by our team and shipped out in the order received. Processing times may vary during busy seasons.

Tracking Number: Once your shipment is scheduled with the freight carrier, a tracking number and Bill of Lading number are assigned. We will send you the tracking number in a shipment confirmation email to allow you to track your order.

Delivery Time: Transit times vary depending on the destination, typically arriving within 1 to 7 business days after leaving the warehouse. Delays outside our control during transit may occur.

Delivery Appointment: For freight shipments, the carrier will contact you to arrange a 4-hour delivery window. You must be present to sign the Bill of Lading or incur redelivery fees.

Delivery: For facilities with a loading dock, the driver will unload at the dock. Without a loading dock, the item will be lowered using a lift gate and delivered curbside or to the nearest safe drop-off location.

What To Expect At Delivery

Curbside Delivery: The driver will leave your item on a pallet at your curbside.

Inspect Before Signing: Inspect the boxes and pallets for damage before signing. If there's damage, mark “DAMAGED, NEEDS REVIEW” on the delivery receipt, take photos or videos, and email them to info@PowerGearPros.com.

Unpack and Check: Open and inspect your items for missing or damaged parts within 2-3 business days. Report any issues promptly to ensure effective support.

Extreme Damage: If your shipment shows severe damage or broken components, document with photos/videos and refuse the delivery. Contact us immediately at info@PowerGearPros.com.

Installation: Freight drivers do not bring products indoors or install them. Be ready to move heavy boxes to the desired location. If you're expecting an installer to help you out, make sure you plan accordingly. 

Additional Services

Threshold Delivery: If needed, we can arrange delivery into a safe, dry place on your property instead of curbside for an additional fee.

Professional Installation: We can help connect your with professional installers should you need one. Request a quote before ordering or if needed for an already delivered item.

Storage Fees and Missed Deliveries

If you cannot receive the order upon arrival, storage or additional shipping fees may apply. Inform us before ordering or as soon as possible to schedule a specific delivery date. Failure to respond to freight company contact attempts or being absent at drop-off will result in fees.

By placing an order, you agree to these terms. For further questions about shipping or delivery, contact us at info@PowerGearPros.com or call 888-269-4395. Thank you for choosing Power Gear Pros. We strive to make your shopping and delivery experience seamless.

Order Cancellations

Orders placed with Power Gear Pros can be canceled at no cost as long as they haven't been shipped from the warehouse or assigned tracking information. If your order has been assigned tracking, it cannot be canceled and will require you to follow the return process detailed below. Pre-ordered or back-ordered items can be canceled free of charge before restocking and shipment unless otherwise notified.

30-Day Return Policy

Returns due to customer remorse are evaluated on a case-by-case basis due to the nature of the products involved.

  • The return must be initiated within 30 days of package delivery.
  • The product must be in its original packaging, in brand-new condition, and unused.

Call 888-269-4395 to speak with a representative regarding your order.

Return Process

To start a return, please email support@powergearpros.com with the following information:

  • Order Number
  • Date of Delivery
  • Reason for return

If the item is unused, undamaged, and in its original condition and packaging, we will provide a shipping quote, which the customer is responsible for. Upon acceptance of the quote, we will send a return shipping label, and you will be responsible for preparing the product for shipment. Once received and inspected, we will issue a refund to the original payment method used.

Please Note

If the returned item is incomplete to the manufacturer's standards or not in brand-new condition, Power Gear Pros reserves the right to issue partial credit based on the manufacturer’s and our discretion.

Damages

It is essential to be present for package delivery, whether by standard ground shipping via UPS, FedEx, USPS, or LTL freight shipping. Please carefully inspect the packaging upon arrival. If there is any damage or missing items, note it upon signing the BOL (Bill of Landing) for freight deliveries, or report damages to the ground shipping carrier within seven days. Take numerous photos and videos to facilitate the process. Please send them to support@powergearpros.com, and we will process an insurance claim with the manufacturer on your behalf.

Compare Bluetti Power Stations

Compare EP900 EP800 AC500 + B300S AC300 + B300 EP500Pro EP500 AC240P AC200PL AC200Max AC200P AC180P AC70P AC60P EB70S EB55 EB3A AC2P
Product Image EP900 EP800 AC500 + B300S AC300 + B300 EP500Pro EP500 AC240P AC200PL AC200Max AC200P AC180P AC70P AC60P EB70S EB55 EB3A AC2P
MSRP $10,298 $8,999 $2,799 $2,299 $4,999 $3,999 $1,999 $1,999 $1,699 $1,499 $999 $699 $749 $649 $489 $269 $299
Shop Now Shop Shop Shop Shop Shop Shop Shop Shop Shop Shop Shop Shop Shop Shop Shop Shop Shop
Base Battery Capacity (Wh) 9,920Wh 9,920Wh 3,072Wh (B300S Battery) 3,072Wh (B300 Battery) 5,120Wh 5,120Wh 1,843Wh 2,304Wh 2,048Wh 2,000Wh 1,440Wh 864Wh 504Wh 716Wh 537Wh 268Wh 230.4Wh
Max Battery Capacity (Wh) 39,680Wh 39,860Wh 36,864Wh 24,576Wh 10,240Wh (2 units) 10,240Wh (2 units) 20,272Wh (2 units and 8 B210P) 8,448Wh (with B210P, B230, or B300) 8,192Wh (with B230 or B300) 5,072Wh (B300 + XT90-P090D) 4,224Wh (with B80/230/300) 3,072Wh (with B80/230/300) 2,116Wh (Two B80P) 716Wh 537Wh 268Wh 230.4Wh
Base AC Output (W) 7,600W (9,000W On-Grid) 7,600W 5,000W 3,000W 3,000W 2,000W 2,400W (3,600W Surge) 2,400W 2,200W 2,000W 1,800W 1,000W 600W 800W 700W 600W 300W
Max Output (W) 18,000W (2 units connected) 15,200W (2 units) 10,000W (2 AC500 units) 6,000W 6,000W (2 units) 4,000W (2 units) 4,800W (2 units) 3,600W (Power Lifting Mode) 4,800W surge power 4,800W surge power 2,700W (Power Lifting Mode) 2,000W (Power Lifting Mode) 1,200W (Power Lifting Mode) 1,400W surge power 1,400W surge power 1,200W surge power 600W surge power
AC Charge Input (W & Time) 9,000W 9,000W 4,500W Max (with 1 B300S) 3,000W: 1.5 Hour Recharge 3,000W 600W 2,200W 2,400W 500W 400W 1,440W 950W 600W 200W 200W 350W 270W
Solar Charge Input (W & Time) 9,000W 9,000W 3,000W 2,400W: 2-3 Hour Recharge 2,400W 1,200W 1,200W 1,200W 900W 700W 500W 500W 200W 200W 200W 200W 200W
Portability (Weight) Inverter: 97 lbs, Battery: 128 lbs each Inverter 105 lbs, Batteries: 128 lbs each AC500: 66 lbs, B300S: 83 lbs each AC300: 48 lbs, B300: 80 lbs each 182 lbs 167 lbs 72 lbs 63.5 lbs 61.9 lbs 60.6 lbs 35.27 lbs 22.5 lbs 20.06 lbs 21.4 lbs 16.5 lbs 10.14 lbs 7.9 lbs
Battery Chemistry LiFePO4 LiFePO4 LiFePO4 LiFePO4 LiFePO4 LiFePO4 LiFePO4 LiFePO4 LiFePO4 LiFePO4 LiFePO4 LiFePO4 LiFePO4 LiFePO4 LiFePO4 LiFePO4
Warranty 10 Years 10 Years 4 Years 4 Years 5 Years 5 Years 6 Years 5 Years 4 Years 4 Years 5 Years 5 Years 6 Years 2 Years 2 Years 2 Years 5 Years
What/How Long It Can Power Full-size fridge (30+ hrs) or 3-ton AC (several hrs) Fridge, HVAC, heaters (days during outages) Air conditioners, refrigerators, power tools (emergencies/off-grid) Heaters, AC, power tools, essential devices (extended use) Laptops, AC, electric vehicles (short-term power) Fridge (10+ hrs) or laptop (80+ charges) Fridge (6 hrs) or smartphone (150+ charges) RV AC (2-3 hrs) or smartphone (200+ charges) 12V fridge (40 hrs) or laptop (40+ charges) Coffeemaker (1.5 hrs), grill, or AC (1-4 hrs) Mini fridge (14 hrs) or laptop (20+ charges) Mini fridge (8 hrs) or smartphone (100+ charges) Laptop (8 hrs) or smartphone (40+ charges) Mini-fridge (9+ hrs) or smartphone (50+ charges) Mini-fridge (7-8 hrs) or smartphone (40 charges) Mini-fridge (3-4 hrs) or smartphone (25 charges) Laptop (3-4 hrs) or smartphone (15 charges)
Best for Whole-home backup with off grid AND on-grid power storage Whole-home backup and off-grid power storage Home backup, off-grid, RV, camping, 120V/240V output Whole-home backup, off-grid, emergency prep, load shifting Home backup, off-grid, RV, camping, 120V/240V output Home backup power, off-grid, events, short term outages Outdoor adventures, RV, yachts, boats, emergency prep (IP65) RV, off-grid, home backup, outdoor use Home backup, off-grid, RV, outdoor use Home backup, camping, van life, off-grid Outdoor adventures, RV, emergency prep (compact design) Outdoor adventures, RV, expandable capacity Outdoor, road trips, water-resistant, dust-proof Camping, RV, lightweight, versatile charging Camping, road trips, lightweight power Camping, travel, emergency backup, small appliances Emergency power, travel, essential devices

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