cwah
100 MW
Hello,
Recently I've decided to plug my cell-log to my bike, and have an extension allowing me to see each cells discharge load while I'm cycling.
Something strange occurred to me:
The first and last cell of my pack are sagging more than my other cells. All other cells are sagging on a similar way but not the first and last. Furthermore, once fully charged, all cell end up on the same voltage. But during discharge, first and last go a bit lower (due to higher sag).
So, what are the possibilities?
1. My first and last row of cell have lower capacity? (unlikely)
2. The pack construction created more load on the first and last row of cells?
3. It's a normal behaviour, so maybe I should add 1 more cell in parallel for the first and last row of cells?
Recently I've decided to plug my cell-log to my bike, and have an extension allowing me to see each cells discharge load while I'm cycling.
Something strange occurred to me:
The first and last cell of my pack are sagging more than my other cells. All other cells are sagging on a similar way but not the first and last. Furthermore, once fully charged, all cell end up on the same voltage. But during discharge, first and last go a bit lower (due to higher sag).
So, what are the possibilities?
1. My first and last row of cell have lower capacity? (unlikely)
2. The pack construction created more load on the first and last row of cells?
3. It's a normal behaviour, so maybe I should add 1 more cell in parallel for the first and last row of cells?