Full discharge of NiMH's

Are there any problems associated with allowing NiMH batteries to fully discharge in circuit? For example, is longevity affected, or ability to recharge.

The circuit in question has an op amp that will continue to draw quiescent current should the user neglect to power off.

Henry

NiMH (or NiCd) cells can be discharged right down to zero, but no lower. The reason for the 1v rule of thumb is to avoid reverse-charging a weak sister in a multi-cell battery. There isn't much charge under 1V (or ..9V), so not much capacity is lost by keeping the per-cell voltage above ..9V-1V.

Especially if cells are in series, the first cell to go flat gets reverse biased by the other cells continuing to pump current, which shortens its life.

Roger