The 32700 12800mAh LiFePO4 battery is a lithium iron phosphate (LiFePO4) rechargeable cell designed for high-drain applications. With 3.2V voltage, 12.8Ah capacity, and screw terminals, it offers superior thermal stability, 2000+ cycles, and 10-year lifespan. Ideal for solar storage, EVs, and industrial equipment due to its safety, durability, and maintenance-free operation.
What Is a 7.4V LiPo Battery and How Does It Work
What Are the Key Technical Specifications of This Battery?
| Specification | Detail |
|---|---|
| Dimensions | 32mm diameter x 70mm height |
| Weight | 150g ±5g |
| Nominal Voltage | 3.2V |
| Internal Resistance | ≤15mΩ |
The cylindrical form factor enables efficient heat dissipation across its 70mm length, particularly beneficial in stacked configurations. With 12.8Ah capacity at 0.2C discharge rate, it delivers 2.56A continuous current for 5 hours. The compact 32mm diameter allows dense packing in battery racks – 128 cells occupy just 0.68m³ in 48V configurations. Engineers particularly value the ≤15mΩ internal resistance, which reduces voltage drop to 0.48V even at 32A peak draws.
How Does Temperature Affect Performance and Lifespan?
At -20°C, capacity drops to 85% but recovers fully at 25°C. Built-in CID activates at 150°C to prevent venting. Optional self-heating versions maintain 70% capacity at -30°C using 3% stored energy.
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Thermal management proves critical for optimal performance. Between 10°C-35°C, the battery achieves rated capacity with less than 2% variance. Below freezing, electrolyte viscosity increases, causing temporary capacity reduction. However, the LiFePO4 chemistry avoids lithium plating risks common in NMC cells during cold charging. High-temperature operation requires derating – at 55°C, continuous discharge should be limited to 0.5C to preserve cycle life. Advanced users implement phase-change material sleeves that absorb 18kJ of thermal energy during load spikes.
DEESPAEK 12V 200Ah LiFePO4 Battery for RV, Solar, and Trolling Motor Use
Why Choose Screw Terminals Over Other Connection Types?
Screw terminals enable 35A continuous/70A pulse current handling vs. 10A max for solder tabs. Gold-plated M6 screws reduce contact resistance to 0.2mΩ and withstand 500+ connection cycles.
Which Applications Benefit Most From This Battery’s Design?
- Telecom backup power systems
- Electric forklifts
- Off-grid solar arrays
“The 32700 LiFePO4 format is revolutionizing mid-scale energy storage. These cylindrical units allow 360° heat dissipation, enabling 20% higher sustained loads.”
– Dr. Elena Marquez, VoltCore Technologies
FAQs
- How Often Should Terminal Screws Be Retightened?
- Check torque every 6 months or 500 operational hours. Use 8Nm torque wrench – under-tightening causes arcing; over-tightening strips threads.
- Can This Battery Be Charged With Solar Panels Directly?
- Only with MPPT controllers supporting LiFePO4 profiles. Direct connection damages cells – requires 3.65V/cell absorption voltage.