PRS-300 Battery charging

[recce101]

After reading several reports that the battery status indicator on the 300 is inaccurate, I've formed the habit of "topping off" the charge whenever one or two indicator segments turn white — connecting to the PC and leaving it plugged in until the red charging light goes out.

I know some types of batteries don't like this treatment, and prefer an occasional deep discharge to frequent topping off. Will topping off reduce the life or capacity of the PRS-300 battery?