Re: That's a good way to kill a Lithium rechargeable battery
It really depends on when the battery management decides the cell is at 0% and cuts off. If it does that a 3V, then the cell will be fine. 2.5V (or even 2.4V) and we are in damage territory.
The problem is that in order to get 4 stars for battery life from new the pressure will be to suck all of the available juice from the cell to get that rating.