Ahm. Best bet is to go to Battery University, http://www.batteryuniversity.com
for more than you wanted to know about batteries.
In your case " Lithium-ion is a low maintenance battery, an advantage that most other chemistries cannot claim. There is no memory and no scheduled cycling is required to prolong the battery's life. In addition, the self-discharge is less than half compared to nickel-cadmium,
Despite its overall advantages, lithium-ion has its drawbacks.
Aging is a concern with most lithium-ion batteries and many manufacturers remain silent about this issue. Some capacity deterioration is noticeable after one year, whether the battery is in use or not. The battery frequently fails after two or three years. "
Don't worry about cycles or memory. Read the site, however, it is outstanding.