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12.8V 300Ah LiFePO4 Battery Pack
Operating Voltage Range: 8.8V – 14.6V
Nominal Voltage: 12.8V
Nominal Capacity: 300Ah
Minimum Capacity: 195Ah / 295Ah
Rated Energy: 3840Wh
LiFePO4 Battery Pack – 12.8V (300Ah)
The 12.8V 300Ah LiFePO4 Battery Pack is designed for heavy-duty, high-power applications requiring significant capacity, fast charging, and long-term reliability. With 3840Wh energy storage, 150A maximum discharge, and an impressive 4000-cycle life, this battery is perfect for solar storage, RV systems, marine power, backup power, and industrial machinery.
Applications:
- Solar energy storage systems for residential and commercial use
- RV, motorhome, and camper power setups
- Marine power systems, electric trolling motors, and navigation equipment
- UPS backup and emergency power systems
- Industrial automation, robotics, and heavy-duty machinery
- Portable power stations for outdoor and remote locations
- Telecom towers, CCTV, and remote monitoring systems
- Medical equipment and mobility devices
Technical Specifications:
- Operating Voltage Range: 8.8V – 14.6V
- Nominal Voltage: 12.8V
- Nominal Capacity: 300Ah
- Minimum Capacity: 195Ah / 295Ah
- Rated Energy: 3840Wh
- Maximum Continuous Discharge Power: 1280W / 3840W
- Fast Charging Voltage: 14.6V
- Standby Charging Voltage: 13.5V – 13.8V
- Floating Charging Voltage: 13.5V – 13.8V
- Discharge Low Protection Voltage: 8.8V – 10V
- Standard Charging Current: 60A
- Recommended Charging Current: 100A
- Maximum Charging Current: 100A / 150A
- Standard Discharge Current: 60A
- Maximum Continuous Discharge Current: 100A / 150A
- Internal Resistance: ≤50mΩ / ≤10mΩ
- Charging Temperature: 0°C – 50°C
- Discharge Temperature: -20°C – 60°C
- Cycle Life (25°C, 80% DoD): 4000 cycles
- Cell Configuration: 4S
- Waterproof & Dustproof Rating: IP65
- Weight: ≈30 kg
- Product Size (L × W × H): 523 × 269 × 222 mm
Safety & Compliance:
- LiFePO4 chemistry ensures superior thermal stability and non-flammability
- BMS protection for overcharge, over-discharge, short circuit, and overcurrent
- IP65-rated enclosure ensures protection from dust, water splashes, and outdoor exposure
- Low internal resistance reduces heat generation and increases battery lifespan
- Operates safely in extreme temperatures from -20°C to 60°C
- Environmentally friendly, free from toxic heavy metals and hazardous chemicals
Benefits:
- Massive 300Ah capacity for extended runtime in large-scale systems
- Powerful 100A continuous discharge, ideal for high-demand applications
- Fast charging capability (up to 150A) for minimal downtime
- 4000-cycle lifespan, providing long-term durability and reliability
- Lightweight compared to lead-acid batteries, at approximately 30 kg
- Stable voltage output for sensitive electronics and equipment
- Low self-discharge — perfect for emergency and backup systems
- Maintenance-free — no acid, no leaks, no servicing required
- More usable capacity compared to AGM, GEL, or lead-acid batteries
Long Life and Reliability:
- 4000+ cycles provide reliable service for many years
- Rugged IP65-rated housing for use in marine, outdoor, and industrial settings
- Consistent high-power output even under heavy-load and long-duration use
- Thermally stable design prevents overheating and extends battery life
- Designed for continuous operation in solar, RV, marine, and backup systems
- Ideal for long-term use with high-power demands

What applications can the 12.8V 300Ah LiFePO4 battery support?
This high-capacity battery is ideal for solar energy storage, RV and camper systems, marine electronics, backup power systems, industrial machinery, and portable power stations.
What applications can the 12.8V 300Ah LiFePO4 battery support?
The battery has an impressive 4000+ cycles at 80% depth of discharge, meaning it can last for 8–12 years, depending on usage, outlasting lead-acid and AGM batteries.
What charger should I use with the 12.8V 300Ah battery?
Use a LiFePO4-compatible charger with:
- Fast charging voltage: 14.6V
- Recommended charging current: 100A
- Maximum charging current: 100A / 150A
Avoid using non-LiFePO4 chargers to preserve battery life.
Can the 12.8V 300Ah LiFePO4 battery be used in outdoor or marine environments?
Yes, this battery has an IP65 waterproof and dustproof rating, making it perfect for marine, outdoor, and harsh environments. It also operates safely in temperatures from -20°C to 60°C.
Related products
12.8V 100Ah LiFePO4 Battery Pack
12.8V 135Ah LiFePO4 Battery Pack
12.8V 150Ah LiFePO4 Battery Pack
12.8V 30Ah LiFePO4 Battery Pack
- Operating Voltage Range: 8.8V – 14.6V
- Nominal Voltage: 12.8V
- Nominal Capacity: 30Ah
- Minimum Capacity: 29.5Ah
- Rated Energy: 384Wh
12.8V 20Ah LiFePO4 Battery Pack
- Operating Voltage Range: 8.8V – 14.6V
- Nominal Voltage: 12.8V
- Nominal Capacity: 20Ah
- Minimum Capacity: 19.5Ah
- Rated Energy: 256Wh
- Offers high energy density
- 4000+ Charge cycles
- Safety
- ECO-friendliness
- Fast charging
- Lightweight
- Long-lasting
- Stable and sustainable power

National Battery Supply is a reputable manufacturer specializing in custom battery solutions. With over 20 years of experience, we can manage all your power needs.
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