Shenzhen Bely Energy Technology Co., Ltd.
                                                                                                           
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10 Years
Since 2016
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12V 300Ah LiFePO4 Battery 3840Wh with Built-in BMS for RV Solar Marine Applications

Price Negotiable
Price: Negotiable
MOQ: 10PCS
Delivery Time: 7-14 days for samples, 35-60 days for mass production
Brand: bely
Product Description
Bely 12V 300Ah LiFePO4 Battery Pack

High-performance lithium iron phosphate battery with 3840Wh capacity, built-in smart BMS, and support for parallel/series connections. Ideal for RV, marine, solar, and off-grid applications.

Key Specifications
Parameter Value
Nominal Voltage 12.8V
Nominal Capacity 300Ah / 3840Wh
Dimensions 526mm × 235mm × 217mm/237mm
Net Weight 32.5 kg
Max Continuous Discharge 150A (less than 25 minutes)
Cycle Life 3000+ cycles at 90% DOD
Operating Temperature -20°C to 60°C
Protection Rating IP65
Warranty 2 years standard (extendable to 5 or 7 years)
Core Features
  • Built-in Smart Battery Management System (BMS)
  • Parallel and series connection capable (up to 4 units)
  • Pollution-free LiFePO4 chemistry
  • High energy density and light weight
  • No memory effect and low self-discharge
  • UL 1642, UN38.3, ICE62619, CE, MSDS certified
  • 96% energy efficiency
Bely 12V 300Ah LiFePO4 Battery showing dimensions and connections
Applications
  • RVs, motorhomes, and caravans
  • Solar power systems and renewable energy storage
  • Electric boats and marine applications
  • Off-grid power systems and mobile power supplies
  • Emergency power supply and UPS systems
  • Camping and leisure applications
Battery Management System

Integrated BMS provides comprehensive protection including:

  • Under-voltage and over-voltage protection
  • Over-temperature and under-temperature protection
  • Overload and short-circuit protection
  • Automatic system recovery after fault resolution
Important Notes

Installation and maintenance must be performed by qualified specialists. Use only compatible lithium battery chargers. Do not short-circuit or reverse polarity connections. Store at 50-60% charge when not in use for extended periods.

Bely LiFePO4 battery installation and connection diagram

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shenzhen Bely Energy Technology Co., Ltd.
Location 4/F, No. 1 Building, HuaWei KeGu Industry Park, Dalingshan Town, Dongguan, Guangdong, China. P.C.: 523000
Contact Person Sales department

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