For this project let the requirement is: 12.8 V and 42Ah Battery Pack Specification of 32650 Cells Used: 3.2V and 6000 mAh The desired capacity of the battery pack = 42AH or 42000 mAh. The capacity of each cell = 6000 mAh No of cells required for parallel connection = 42000 / 6000 = 7 nos
Part 1. What is 32650 LiFePO4 battery? The 32650 LiFePO4 battery is a lithium iron phosphate battery that measures 32mm in diameter and 65mm in length, hence the name “32650.” This type of battery is known for its superior safety, long cycle life, and stable performance compared to other lithium-ion batteries.
The nominal voltage of a 32650 LiFePO4 cell is 3.2V. This stable voltage provides a reliable power output, which is crucial for applications that demand consistent performance. Additionally, the voltage remains relatively steady throughout the discharge cycle, contributing to the battery’s reliability and efficiency.
Ultimately you will make a single cell with a higher capacity. Example: Connecting two 3.2V / 6000mAh cells in parallel will produce 3.2V, but the total capacity will be increased to 12000mAh. To make the battery pack, you have to first finalize the nominal voltage and capacity of the pack. Either it will be in terms of Volt, mAh/ Ah, or Wh.
These are really high-quality FBTech 32650 Cells this cells can easily get you 2000-2500 Cycles these are rated for 3C I’ve Personally Capacity Tested these cells and the result 100% what they are Rated for and I got 6000mAh Kapton Tape - it is used to avoid the heat basically it is a heat resistance tape
Commonly cells in parallel are abbreviated in terms of ‘P’, so this pack will be known as a “7P pack”.When 7 cells are connected in parallel, ultimately you made a single cell with higher capacity ( i.e 3.2V, 42000 mAh ) The desired nominal voltage of the battery pack is 12.8V. The nominal voltage of each cell = 3.2 V