APR (sir or Ms.?) that used to be the case when they didn't use lithium based batteries. Ni-Cd batts have a memory, if you don't fully discharge them before recharging you'll lost capacity. Li-Ion batts don't have a memory. They can get up to 500 some recharges under the right conditions. The number of charging cycles is affected by 3 major variables-
1. Deep cycling- This is where you use a batt from full charge to end. This will rob you of anywhere from 180-300 cycles depending on the other factors if you do it consistently.
2. Starting charge- If you overcharge a battery you will at the very least lose cycles, at the worst.... Think of a lithoum based batt like a balloon. Over-inflating one hurts it, over-inflate too much, and well...
3. Amperage drawn vs. C rating- If you're using a batt with say 500mah, but a c rating of only 2, you can safey pull 1a of current from it. In short bursts you can draw more than that without the battery exploding. You will still damage the cells, meaning you'll lose charging cycles again. An average wow carto at 2.3ohms pulls 1.8a of current at 4.2v for example. So if you're using a batt only rated for 1a with it at 4.2v, you'll damage the cell (this is only an example, Vapor4Life doesn't sell a 500mah batt, and the c rating are higher on their batts).