It's somewhere along "The Bath Tub Curve."

by R. Proffitt Moderator - 11/20/12 1:48 PM

In Reply to: around 5 months.. by akash3001

While we see 300 or more cycles in this sort of battery you can expect some will fail early. In case you are not into failure prediction I'll supply a link about this.

http://en.wikipedia.org/wiki/Bathtub_curve

Almost all gear follows that curve.
Bob