18650 battery pack design for a powerbank

Oh ok, I see, I really want to understand something, in theory, if we have 6 cells Panasonic NCR18650B 3400mah in parallel in the same battery pack.
The total battery pack capacity will be 20400mah, charging it with one TP5100 at 2A, each cell will receive 0.333A (2/6) right?
Total charging time = 20400mah/2000mah = 10.2 hours? Is my reasoning right?

About the optimization of the heating, you advised me to use the charging module in parallel:
It should be connected like this?

Earlier we are talking about the tips to preserve the battery cycle and life.
And above all, stopping the charge before 4.2V would be beneficial based on the studies.
After several hours of searching, I found I very interesting module, the MAX745.

Thanks to this module we can adjust the current charging:

- Voltage adjustment range: 4.1-4.4V

  • Charge current adjustment range: 0-3.6A
    What do you think about?

Another question, can we eventualy custom the TP5000/TP5100 to reduce the charging voltage?

Thank you for your future answers :smiley: