BLUETTI B300K2 Expansion Battery Lithium Iron Phosphate Expansion Battery

Compatible with: AC200L, AC200MAX, AC300, AC500, Apex300 

BLUETTI B300K Expansion Battery (2764.8Wh LiFePO4) - Scale Your Power, Anywhere

Manufacturer Part Number: B300K2

Buy the AC500 + B300K2 Combo

Unlock unparalleled power capacity and flexibility with the BLUETTI B300K2 Expansion Battery, engineered to seamlessly integrate with your existing BLUETTI power stations. Boasting a robust 2,764.8Wh (51.2V, 54Ah) of reliable LiFePO4 battery storage, the B300K is the ultimate solar battery backup solution for extending runtimes, enhancing home energy security, or powering your most adventurous off-grid journeys.

This high-capacity external battery is designed for extreme durability and longevity, featuring automotive-grade LiFePO4 cells that deliver over 4,000 life cycles to 80% original capacity. That means years of consistent, dependable power for everything from essential home appliances during an outage to sensitive electronics on a remote campsite.

The B300K works perfectly with your BLUETTI AC200L, AC200MAX, AC300, and AC500 power stations, giving you the flexibility to scale your energy setup as your needs grow. Stack multiple B300K units to achieve massive capacities (up to 11,059.2Wh with AC300, or a staggering 16,588Wh with AC500 with proper cabling), ensuring you're never left without power, no matter the situation.

Beyond its impressive capacity, the B300K isn't just an add-on; it's also a versatile power hub. It includes a convenient USB-A port (5V/2.4A, 12W max), allowing you to charge smaller devices like smartphones, tablets, or fans directly from the battery itself, providing a standalone power source for quick access.

Key Features & Benefits:

• Massive 2,764.8Wh LiFePO4 Capacity: Provides substantial energy storage for extended power backup, off-grid living, and various high-demand applications.
• Exceptional Durability (4,000+ Life Cycles): Built with automotive-grade LiFePO4 battery cells for superior longevity and consistent performance over thousands of charge cycles.
• Seamless BLUETTI Integration: Compatible with BLUETTI AC200L, AC200MAX, AC300, and AC500 power stations for scalable energy solutions.
• Flexible Expansion: Easily stack multiple B300K units or mix with other compatible BLUETTI battery packs (like B230, B300, B300S) to customize your total power capacity.
• Built-in USB-A Output: Functions as a standalone power bank with a 12W USB-A port for charging small devices directly.
• Robust & Safe Design: Features square LiFePO4 batteries, advanced AI-BMS (Battery Management System) technology, and a durable aluminum casing with an efficient cooling fan for enhanced safety and reliability.
• Rapid Charging Capable: When paired with AC300 or AC500, the B300K can charge up to 80% in just 45 minutes (with an appropriate 30A charging cable).
• Wide Operating Temperature Range: Designed to perform in diverse climates, with discharge temperatures from -20°C to 40°C (-4°F to 104°F).
• 3+1 Year Extended Warranty: Enjoy peace of mind with BLUETTI's comprehensive warranty.

Ideal for:

• Home Backup Power: Keep essential appliances running during power outages.
• RV & Van Life: Extend your off-grid adventures with abundant portable power.
• Outdoor & Camping: Power all your gear, from lights to mini-fridges.
• Worksite Power: Run tools and equipment where grid power isn't available.
• Emergency Preparedness: A vital component for disaster readiness kits.

Expand your energy horizons with the BLUETTI B300K Expansion Battery. Invest in reliable, scalable, and long-lasting power today!

Technical Specifications:

• Battery Capacity: 2,764.8Wh (51.2V, 54Ah)
• Battery Type: LiFePO4
• Life Cycles: 4,000+ cycles to 80% original capacity
• Output Port: 1 x USB-A (5V/2.4A, 12W Max.)
• Net Weight: 65.04 lbs
• Dimensions (L x W x H): 20.67 × 12.87 × 8.23 in
• 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: -20°C to 40°C (-4°F to 104°F) for up to 1 month; -20°C to 25°C (-4°F to 77°F) for up to 6 months.

About BLUETTI:

BLUETTI builds next-generation energy solutions for off-grid power, home backup, and mobile applications—trusted globally for their advanced battery technology, safety, and performance.

Why Buy From US Solar Supplier?

As an American founded company out of Kentucky, US Solar Supplier is committed to providing top-quality solar products, backed by the world’s leading manufacturers. Our promise is to get you the fairest price from the best brands that offer warranties you can count on. We are updating our inventory daily with solar components that offer the latest technology. With a reputation for excellence and a dedication to customer satisfaction, we ensure that every product we sell meets the highest standards in the industry.

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