How many 18650 batteries are needed for customizing a 48v12A lithium battery pack.

How many 18650 batteries are needed for customizing a 48v12A lithium battery pack.

Many times, a single 18650 cannot meet our needs, so we need several 18650 batteries to be assembled into a lithium battery pack to achieve the voltage and capacity we need.

Today, let me explain the design parameter calculation method for customizing 48v12A electric vehicle battery packs:

We have already talked about what series parallel connection can change in a battery pack before. Today, let's quickly go over 100 million. Series connection changes voltage, parallel connection changes capacity. Now, taking the 186502000mAh battery as an example, let's explain the customized calculation method for 48v12A18650 lithium battery pack:

Our product is 48V, and the calculation method for battery pack voltage is:
Total voltage of battery pack (48v) ÷ nominal voltage of battery cells (3.7v)=number of battery cells in series (S)
Serial quantity: 48v ÷ 3.7v ≈ 13S
Our product is 12Ah, and the calculation method for the capacity range of the battery pack is:
Total capacity of battery pack AH ÷ nominal capacity of battery cells Ah=number of parallel connected battery cells (P)
Parallel quantity: 12Ah ÷ 2Ah=6P
Note: 2000mAh=2Ah
The company calculates the required number of battery cells for the battery pack:
The number of parallel cells (P) multiplied by the number of series cells (S)=the total number of cells required for the battery pack
Total number of battery cells: 13S × 6P=78 pieces
Therefore, for a 48v12A electric vehicle, if you use a 2000mAh battery, you need 78 units. Of course, if you want to customize a smaller lithium battery pack, you need to choose a battery with a larger capacity range, which can reduce the number of parallel connections and thus reduce the number of battery cells.