Originally Posted by DonKarstedt
Any idea what the ill effects might be? It seems to me that the worst that could happen would be if the stronger one discharged into the weaker ones as passdad suggested above.
Found this which explains it better.
"Imagine a chain with strong and weak links. This chain can pull a small weight but when the tension rises, the weakest link will break. The same happens when connecting cells with different capacities in a battery. The weak cells may not quit immediately but get exhausted more quickly than the strong ones when in continued use. On charge, the low cells fill up before the strong ones and get hot; on discharge the weak are empty before the strong ones and they are getting stressed."