How to calculate the lithium powerwall battery voltage and capacity, we must first understand the voltage of different positive materials to calculate the rated voltage. In addition, a lithium battery pack is composed of battery cells (cells) in series and parallel. The ZXDY lithium battery manufacturer tells you how to calculate the voltage and capacity of a lithium battery pack based on its composition.
1. Series (S) increases the voltage, and the capacity remains unchanged.
For example, the rated voltage of one ternary solar powerwall battery lithium is 3.6V, and the capacity is 2600mAH. If 10 ternary lithium batteries are connected in series, the battery pack voltage is 3.6v * 10=36V, and the capacity is not changed to 2600mAH, the final result is 36V 2600mAH.
For example, a lithium iron phosphate battery has a rated voltage of 3.2V and a capacity of 4000mAH. If 10 lithium iron phosphate batteries are connected in series, the battery pack voltage is 3.2v * 10=32V, and the capacity is unchanged at 4000mAH. Finally, it is 32V 4000mAH.
2. Parallel connection (P) increases the capacity, and the voltage remains unchanged.
For example, the rated voltage of one ternary lithium battery is 3.6V, and the capacity is 2600mAH. If 10 ternary lithium cells are connected in parallel, the battery pack capacity is 2600mAH * 10=26000mAH, and the voltage is unchanged at 3.6V, the final result is 3.6V 26000mAH.
For example, the rated voltage of one lithium iron phosphate battery is 3.2V, and the capacity is 4000mAH. If 10 lithium iron phosphate batteries are connected in parallel, the battery pack capacity is 4000mAH * 10=40,000mAH, and the voltage is unchanged at 3.2V, the final result is 3.2V 40,000mAH.
3. The electric core has both series connection and parallel connection. The same calculation method is used to calculate the voltage and capacity.
4. Battery capacity of lithium battery pack WH=rated voltage of battery pack V * capacity of battery pack AH.
Usually, this is also the calculation method of lithium battery pack price.
For example: ternary battery pack 48V15AH
Voltage: 3.7V * 13=48.1V ≈ 48V
Capacity: 2500mAh * 6=15000mAh=15Ah
WH：48v*15ah＝720WH
Price: If 1.2 yuan/wh, the price of this battery pack is 864 yuan.