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12.8V 300Ah lithium battery

Our 12.8V 300Ah lithium iron phosphate battery delivers an impressive 3840Wh of total energy—the highest capacity in our 12.8V series. Engineered as a direct drop-in replacement for lead-acid batteries, this powerhouse provides triple the capacity of our 100Ah model while maintaining a surprisingly compact footprint and manageable weight (28kg).

Built with premium A-grade LiFePO₄ cells, this battery offers robust discharge performance: 200A continuous and 400A peak (3 seconds)—making it ideal for the most demanding applications. The advanced intelligent BMS provides comprehensive protection while ensuring optimal performance and cell balancing. Completely maintenance-free, it eliminates the hassle of regular upkeep associated with lead-acid batteries.

Whether for large-scale solar installations, commercial backup systems, heavy-duty mobile applications, or industrial equipment, this battery delivers maximum reliable energy storage when you need it most.

Specification

Before using this battery, please read this specification carefully for correct use.
1.Conventional technical parameters:

No. Item General parameters Remark
1 Total Energy 3840 Wh  
2 Rated Capacity Nominal Capacity: 300Ah 0.2C/0.2C Capacity≥100% 0.5C/0.5C Capacity≥95% 0.5C/1.0C Capacity≥90%
Minimum according to the discharge rate
3 Rate Voltage 12.8V Working Voltage
4 End-off Voltage 10.8V End-of-discharge
5 Charging Cut-off Voltage 14.6V Upper Battery Voltage
6 IR ≤30mΩ Test in AC 1KHZ
7 Standard Charge ≤150A  
8 Max. Discharge Continuous Current 200A  
9 Max. Instantaneous Discharge Current 400A(3S)  
10 Operating Temperature Charge: 0~60℃  
Discharge:  -20~60℃  
11 Size/mm 522*240*218 ±3mm  
12 Weight 28.0kg±1.5 kg  

2.Battery BMS basic parameters

Charging Voltage 14.4V
Continuous charging/discharging current 150~200A
Operating Temperature -20~60
Main Function
Overvoltage and Undervoltage Protection Overcurrent Charge
Overcurrent Discharge Short Circuit Discharge
Overtemperature Charge Undertemperature Charge
Overtemperature Discharge Undertemperature Discharge
High Temperature Protection of FET(Built-in) Balance Function

Technical Features

  • Maximum Energy Capacity: 3840Wh total energy with 300Ah rated capacity
  • High Discharge Performance: 200A continuous, 400A peak (3 seconds) for demanding loads
  • Efficient Capacity Delivery: ≥100% at 0.2C charge/discharge rate
  • Standard Charge Current: Up to 150A for faster charging
  • Wide Operating Range: Discharge from -20°C to 60°C, charge from 0°C to 60°C
  • Comprehensive BMS Protection:
    • Overvoltage and undervoltage protection
    • Overcurrent protection (charge and discharge)
    • Short circuit protection
    • Temperature protection (charge and discharge)
    • High temperature protection of FET
  • Internal Cell Balancing: Maintains consistent performance across all cells
  • Maintenance-Free Operation: No watering, no equalization charges, no acid spills or corrosion
  • Durable Construction: Robust enclosure for long-term reliability in various environments

Application

1. Solar Energy Storage

Ideal for residential solar systems, storing excess energy generated during the day for use at night or during cloudy periods. With 100% depth of discharge, users can access the full 1280Wh capacity without compromising battery life—far superior to lead-acid alternatives.

2. Off-Grid Power Systems

Perfect for remote cabins, tiny homes, or off-grid living situations where reliable, maintenance-free power storage is essential. The wide operating temperature range (-20°C to 60°C) ensures dependable performance in diverse climates, from freezing winters to hot summers.

3. Backup Power (Home UPS)

Provide seamless backup power during grid outages to keep essential appliances running—lights, refrigerators, Wi-Fi routers, and medical devices. The compact size allows for easy installation in tight spaces like utility closets or garages.

4. RV and Camper Van Applications

Lightweight design (only 14kg vs. 30-35kg for lead-acid) makes this battery an excellent choice for recreational vehicles and camper vans where every kilogram counts. Space-saving footprint frees up storage for other essentials while providing reliable power for lighting, appliances, and electronics.

5. Marine and Boating

Ideal for boats and yachts, offering maintenance-free operation and vibration resistance. Perfect for powering trolling motors, onboard electronics, and auxiliary systems without the weight penalty of traditional marine batteries.

6. Golf Carts and Electric Vehicles

Suitable for low-speed electric vehicles like golf carts, mobility scooters, and electric floor sweepers. High discharge current capability (100A continuous, 200A peak) handles demanding loads while the longer cycle life reduces replacement costs.

7. Camping and Outdoor Adventures

Power portable solar generators for camping trips, outdoor events, or remote work sites. The durable build withstands outdoor conditions while providing quiet, fume-free energy access.

8. Telecommunications and Remote Monitoring

Support telecommunications equipment, weather stations, security cameras, or remote sensors in locations without grid access. Maintenance-free operation is ideal for hard-to-reach installations.

9. Small Commercial Applications

Perfect for small businesses, street vendors, food trucks, or mobile workshops requiring dependable, portable power for lighting, refrigeration, tools, or electronic equipment.

10. Lead-Acid Battery Replacement

Direct drop-in replacement for existing lead-acid batteries in virtually any application—offering longer runtime, faster charging, lighter weight, and maintenance-free operation with zero modifications to existing systems.

Superior to Lead-Acid Batteries

  • Compact Size: Significantly smaller footprint than equivalent lead-acid batteries, maximizing valuable installation space
  • Lightweight: Only 28kg—just 40-50% of the weight of a comparable lead-acid battery (typically 60-70kg)
  • Longer Cycle Life: Thousands of deep cycles vs. 300-500 cycles for lead-acid, dramatically reducing replacement frequency
  • Extended Lifespan: Premium A-grade LiFePO₄ cells designed to outlast traditional batteries by 4-5 times
  • 100% Usable Capacity: Full depth of discharge without damage, unlike lead-acid (typically only 50% usable)

Packing details

56pcs/pallet, 1512kgs, 2.73CBM

Warranty

3 years

Contact Us

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