05-05-2018, 07:37 AM

(05-04-2018, 07:23 PM)garolittle Wrote: Thanks for your question. Based on the drawing above, it would be three separate 24v packs (7S20P) connected in series which would result in 72V. Assuming 2.5 amp hours per cell, this would result in a total “Watt Hour” calculation as follows: Total # of cells: 420 mutlpied by 3.7 nominal voltage per cell and then multiplied by 2.5 amp hours per cell. This would be approximately 3,800 Watt hours for the entire 72v pack.

The calcualtion is as follows: 7s 20 P will with 2.5 amp cells give you: 2,5 x 20 = 50 amps x 24 volts = 1.200 watts.

50 amps x 72 volt = 3.600 watts. Putting pack in series ups the voltage not the amperage.