Cell LiFePO4 6700mAh 3.35A 3.2V BAb 32700 Grade A

The 32700 type battery cell under the BAb (Big Ass) brand is characterized by high capacity and the safety benefits of LiFePO4 chemistry. The cell is manufactured by Hunan Huaxing New Energy, one of the world's leading producers of cylindrical LFP cells. This specific series is optimized for maximum energy density while maintaining high safety and long cycle life. A key advantage is the integrated M4 threaded terminals, which eliminate the need for spot welding.

The 32700 format represents an ideal compromise between compact 18650 cells and large prismatic batteries. The designation defines the physical dimensions: a diameter of 32 mm and a height of 70 mm. For professional and DIY projects, this format is crucial because it allows for high capacities—6.7 Ah in this case—while keeping the number of cells in the pack reasonable.

Key Advantages:

• Superior Energy Density: The 6700 mAh capacity represents the technological maximum for the 32700 format. It allows for the assembly of battery packs with higher capacity while maintaining a lower number of cells connected in parallel.
• Space Optimization: Thanks to the 32700 cylindrical format and high specific capacity, you can achieve more compact dimensions for the resulting battery. This is critical in limited spaces such as RVs, boats, or portable battery boxes.
• High Thermal and Chemical Stability: LiFePO4 chemistry is the safest variant of lithium technology. The cells are highly resistant to thermal runaway, ignition, or mechanical damage, making them ideal for installations in living spaces.

Technical Specifications:

• Nominal Capacity: 6.7 Ah
• Nominal Voltage: 3.2 V
• Operating Voltage Range: 2.5 V ~ 3.65 V
• Maximum Charging Voltage: 3.65 V
• Standard Charging Current: 3.35 A
• Maximum Continuous Discharge Current: 3.35 A
• Maximum Pulse Discharge Current: 10 A (for duration < 10 s)
• Internal Resistance: ≤ 10 mΩ
• Cycle Life: > 2000 (at 80% DoD)
• Operating Temperature (Charging): 0 °C ~ 45 °C
• Operating Temperature (Discharging): -20 °C ~ 60 °C