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Trivia Friday (10202023)
Posted by Renita DSouza on October 20, 2023 at 4:51 pmCalculate the number of cells required to achieve a 48v 4400 mah battery pack. Assume a lithium battery with a nominal voltage of 3.7v and full charge voltage of 4.2v with 2200mah capacity.
 13
 15
 2
 26
Renita DSouza replied 11 months, 3 weeks ago 7 Members · 7 Replies 
7 Replies

The correct answer is D) 26 Cells
Explanation:
Calculate the Number of Cells in Series:
To get a total voltage of 48V, you would need:
Number of Cells in Series = 48V/{Nominal Voltage per Cell (3.7V)}
= 48/3.7 = approx 13 cells
In a series configuration, the voltage adds up, so 13 cells in a series would give you a nominal voltage of 13* 3.7V = 48.1V.
Calculate the Number of Cells in Parallel:
Now, to achieve the desired capacity of 4400mAh (or 4.4Ah), you need to calculate the number of cells in parallel.
Each individual cell has a capacity of 2200mAh (or 2.2Ah). To get a total capacity of 4.4Ah in parallel, you would need:
Number of Cells in Parallel = 4.4Ah/2.2Ah = 2 cells
So, to achieve a 48V 4400mAh battery pack, you would need 13 cells in series and 2 sets of these 13 cells connected in parallel, hence 13*2 = 26 cells
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The winner of this week’s Trivia Quiz is Jaison. Congratulations!
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