BLUETTI B500K 5,120Wh Expansion Battery for Apex 300 Power Station

BLUETTI B500K 5,120Wh Expansion Battery for Apex 300 Power Station

Name: BLUETTI B500K 5,120Wh Expansion Battery for Apex 300 Power Station
Brand: Bluetti
SKU: B500K-APEX300
Price: 1898.99 USD
Availability: InStock

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Bluetti

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B500K-APEX300

$1,898.99

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BLUETTI B500K 5.12kWh Expansion Battery | Apex 300 Compatible | Scalable to 100kWh | LiFePO₄ Backup Power

Expandable power built for Apex 300 systems. The BLUETTI B500K is a 5.12kWh lithium iron phosphate (LiFePO₄) expansion battery engineered specifically to increase the capacity of the BLUETTI Apex 300 Power Station. With 4,000+ charge cycles, expansion capability up to 100kWh, and seamless integration into the BLUETTI ecosystem, the B500K delivers scalable, reliable energy storage for home backup, RVs, off-grid living, and mobile power applications.

Key Features

5.12kWh Modular Energy Storage: Each B500K provides 5.12kWh of usable energy and can expand up to 100kWh with Apex 300—supporting partial-home, whole-home, or small business backup systems.
Long-Life LiFePO₄ Battery Technology: Premium lithium iron phosphate cells rated for 10+ years offer superior safety, thermal stability, and long cycle life.
Apex 300 Compatibility: Integrates seamlessly with BLUETTI Apex 300, ensuring stable communication, efficient charging, and reliable system performance.
Smarter BLUETTI Ecosystem Integration: Works with SolarX 4K, Hub D1, and other modular accessories to create a connected energy system.
Rugged, Shock-Resistant Construction: Third-generation wireless internal frame improves durability against vibration and impacts while optimizing airflow for thermal management.
Flexible Installation Options: Mount to a wall or rack for fixed installation, or pair with Foldable Trolley 2 (sold separately) for a mobile, high-capacity backup solution.

Applications

Home Backup Power with Apex 300
RV & Van Life Energy Storage
Camping & Mobile Power Solutions
Off-Grid Living & Remote Work
Small Business & Workshop Backup

Why Choose the BLUETTI B500K?

Extended Runtime for Apex 300: Expand your Apex 300 system to deliver longer backup durations during outages or off-grid use—greater energy independence when it matters most.
Adaptable & Future-Ready: Scales with your needs, allowing you to start small and expand capacity as requirements grow.
Safe, Reliable, Long-Lasting: Advanced LiFePO₄ chemistry, efficient cooling, and reinforced internal design ensure dependable operation in real-world conditions.

What’s Included

1 × BLUETTI B500K 5.12kWh Expansion Battery
1 x CA90* Battery Expansion Cable
User Manual & Warranty Documentation

Specifications

Parameter	Details
Battery
Battery Capacity	5,120 Wh
Battery Type	LiFePO₄ (Lithium Iron Phosphate)
Life Cycles	4,000+ cycles to 80% original capacity
Performance
Max Charging Current	65 A
Max Discharging Current	70 A
Expansion Ports	2 × Expansion Port (58.4 V DC max, 90 A max)
Environmental
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 (≤ 1 month)	−20°C to 40°C (−4°F to 104°F)
Storage Temperature (≤ 6 months)	−20°C to 25°C (−4°F to 77°F)
Working Humidity	5% to 95% RH
General
Weight	45 kg / 99.21 lbs
Dimensions	520 × 327 × 308.5 mm 20.47 × 12.87 × 12.15 in
Compatibility	Apex 300, AC200L, AC200MAX, AC300, AC500, B300K
Warranty	3 + 1 Years

Understanding Your Power Needs

Power Calculation Guide

Sizing Metric	Formula & Example
Energy Consumption (Wh)	Formula: Watts × Hours Example: 60W × 4 hrs = 240 Wh
Battery Capacity (Ah)	Formula: Watt-hours ÷ System Voltage (V) Example: 240 Wh ÷ 12V = 20 Ah
Inverter Size (W)	Formula: Total Watts × 1.25 (safety margin) Example: 300W × 1.25 = 375W → Use 400W inverter
Total Load Power (W)	Formula: Sum of all appliance watts used simultaneously Example: Light (10W) + Fan (75W) = 85W
Runtime (hrs) of Battery	Formula: (Battery Ah × Voltage) ÷ Total Load (W) Example: (100Ah × 12V) ÷ 240W = 5 hrs

Find Your Power Match

Need / Application	System Recommendation
Basic lighting + phone charging	Recommended Battery: 50Ah – 100Ah (12V) Inverter Size: 100W – 200W Notes: For small backup setups
Home office (laptop, fan, TV)	Recommended Battery: 150Ah – 200Ah (12V or 24V) Inverter Size: 500W – 1000W Notes: For moderate usage with 4–6 hours of backup
Home backup (fridge, lights)	Recommended Battery: 200Ah+ (24V or 48V recommended) Inverter Size: 1000W – 1500W Notes: Ideal for longer backups or heavier loads
Business / shop power backup	Recommended Battery: 300Ah+ (48V system) Inverter Size: 2000W – 3000W Notes: Suitable for commercial setups or extended power outages

Why Shop With Us

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Built for Energy Independence: Whether powering a cabin, prepping for emergencies, or going off-grid, our products are chosen for performance, reliability, and sustainability.

BLUETTI B500K 5,120Wh Expansion Battery for Apex 300 Power Station

$1,898.99

BLUETTI B500K 5,120Wh Expansion Battery for Apex 300 Power Station

Bluetti

B500K-APEX300

#1 Authorized Bluetti Distributor

Free Shipping + No Sales Tax

Hassle-Free Returns & Exchanges

Talk To A Real Person

BLUETTI B500K 5.12kWh Expansion Battery | Apex 300 Compatible | Scalable to 100kWh | LiFePO₄ Backup Power

Key Features

Applications

Why Choose the BLUETTI B500K?

What’s Included

BLUETTI B500K 5,120Wh Expansion Battery for Apex 300 Power Station

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