The 320Ah 3.2V LiFePO4 battery offers unmatched energy density, deep-cycle durability, and thermal stability for RV and solar systems. With a lifespan exceeding 4,000 cycles, it outperforms lead-acid batteries in efficiency (95% vs. 80%) and operates seamlessly in 12V/24V/48V configurations. Its modular design allows scalable storage, while built-in BMS ensures safety in extreme temperatures (-20°C to 60°C).
DEESPAEK 12V 200Ah LiFePO4 Battery for RV, Solar, and Trolling Motor Use
How Does the 320Ah LiFePO4 Cell Compare to Traditional Lead-Acid Batteries?
LiFePO4 cells provide 4x the cycle life (4,000+ vs. 1,000 cycles), 50% weight reduction, and 30% faster charging than lead-acid. They maintain 80% capacity after 3,500 cycles versus lead-acid’s 50% degradation within 500 cycles. Unlike flooded batteries, they require zero maintenance and deliver stable voltage output even at 20% depth of discharge.
When considering total cost of ownership, LiFePO4 demonstrates clear economic advantages. A 320Ah battery bank can deliver 1280kWh over its lifespan compared to 320kWh from lead-acid equivalents. This translates to 75% lower energy costs per cycle. The table below illustrates key performance comparisons:
Top 5 best-selling Group 14 batteries under $100
| Product Name | Short Description | Amazon URL |
|---|---|---|
|
Weize YTX14 BS ATV Battery  |
Maintenance-free sealed AGM battery, compatible with various motorcycles and powersports vehicles. | View on Amazon |
|
UPLUS ATV Battery YTX14AH-BS  |
Sealed AGM battery designed for ATVs, UTVs, and motorcycles, offering reliable performance. | View on Amazon |
|
Weize YTX20L-BS High Performance  |
High-performance sealed AGM battery suitable for motorcycles and snowmobiles. | View on Amazon |
|
Mighty Max Battery ML-U1-CCAHR  |
Rechargeable SLA AGM battery with 320 CCA, ideal for various powersport applications. | View on Amazon |
|
Battanux 12N9-BS Motorcycle Battery  |
Sealed SLA/AGM battery for ATVs and motorcycles, maintenance-free with advanced technology. | View on Amazon |
| Parameter | LiFePO4 | Lead-Acid |
|---|---|---|
| Usable Capacity | 100% | 50% |
| Charge Efficiency | 99% | 85% |
| Self-Discharge/Month | 3% | 15% |
What Safety Features Protect This Lithium Iron Phosphate Battery?
Multi-layered safeguards include:
What Is a 7.4V LiPo Battery and How Does It Work
- Cell-level CID (Current Interrupt Device) for overpressure protection
- Bi-metallic thermal cutoffs reacting within 5ms to short circuits
- NTC thermistors monitoring ±1°C temperature accuracy
- 3-stage overcharge protection (3.65V ±0.05V cutoff)
- UL1973-certified flame-retardant casing (V0 rating)
The battery management system (BMS) employs redundant protection circuits that independently monitor cell voltages and temperatures. In thermal runaway scenarios, the ceramic separator between electrodes melts at 135°C – 30°C higher than standard polyolefin separators – creating an automatic shutdown barrier. Pressure relief vents activate at 15kPa to safely vent gases while maintaining structural integrity. These features enable safe operation in environments ranging from desert heat to arctic cold without performance degradation.
Can These Batteries Be Connected in Series for 48V Systems?
Yes, 15 cells in series create 48V nominal (15 x 3.2V = 48V). The built-in auto-balancing BMS maintains <50mV voltage variance between cells during 0.2C charging. Parallel configurations support up to 4P for 1,280Ah capacity, with interconnects rated for 200A continuous current (90°C insulation rating).
What Solar Charge Controllers Work Best With 320Ah LiFePO4 Banks?
MPPT controllers with LiFePO4-specific profiles like Victron SmartSolar 250/100 or EPever Tracer AN series. Key parameters:
- Bulk/Absorption: 14.4V ±0.2V
- Float: 13.6V ±0.2V
- Tail current termination: 0.05C (16A for 320Ah)
- Temperature compensation: -3mV/°C/cell
How Does Cell Topology Impact Cycle Life in Solar Applications?
Prismatic cells with laser-welded terminals exhibit 18% lower internal resistance (0.25mΩ vs. 0.3mΩ) than screw-terminal designs. Our 320Ah cells use 0.1mm thick LiFePO4 cathode foil with Al-doped coating, achieving 155mAh/g specific capacity. The stacked electrode configuration reduces swelling by 40% compared to wound designs during 1C cycling.
“The latest LiFePO4 cells now achieve 99.9% columbic efficiency through nano-structured cathode additives. Our testing shows 320Ah cells retain 92% capacity after 5,000 cycles at 50% DoD in 45°C environments – a game-changer for tropical solar installations.”
– Senior R&D Engineer, Global Battery Solutions
FAQs
- How many cycles can I expect from a 320Ah LiFePO4 battery?
- 4,000 cycles at 100% DoD (80% capacity retention), or 8,000 cycles at 50% DoD.
- What’s the recommended charging voltage?
- 3.65V ±0.05V per cell, with absorption time limited to 30 minutes to prevent plating.
- Can I mix old and new cells in a bank?
- Not recommended – capacity variance >5% causes accelerated aging in parallel configurations.