Lionking45
New Member
- Joined
- Jan 18, 2022
- Messages
- 8
I bought 48 of these 3.2V 25ah Prismatic Cells and connected them in parallel in batches of 16. The first 16 had an average voltage 3.428V with a standard deviation of about 50mV. These top balanced to a resting voltage of 3.592V. I set my PS voltage to 3.62V. I was able to top balance in a few hours with a standard CV power supply.
The next 16 I broke up into two banks of 8 as the first 8 averaged higher than the 2nd eight. The first 8, I connected in parallel had an average of 3.41V and had a couple of outliers at 3.3V and 3.33V but I was still able to top balance to 3.6V in a few hours.
The second 8 had an average of 3.29V with very small variation (4mV - which I guess is good) but is taking a very long time with a CV PS. I have seen in a few threads that below 3.4 volts, it is to be expected. My current input with the PS set at 3.62V is running at around 2A while the batteries measure at 3.327V.
Would I benefit from a higher current PS to speed up the process - say a PS that can go up to 10A at constant 3.62V.
Thanks for any input.
The next 16 I broke up into two banks of 8 as the first 8 averaged higher than the 2nd eight. The first 8, I connected in parallel had an average of 3.41V and had a couple of outliers at 3.3V and 3.33V but I was still able to top balance to 3.6V in a few hours.
The second 8 had an average of 3.29V with very small variation (4mV - which I guess is good) but is taking a very long time with a CV PS. I have seen in a few threads that below 3.4 volts, it is to be expected. My current input with the PS set at 3.62V is running at around 2A while the batteries measure at 3.327V.
Would I benefit from a higher current PS to speed up the process - say a PS that can go up to 10A at constant 3.62V.
Thanks for any input.