Sentient_Nebula on 13 December 2014
The best way to preserve a Lithium-Ion battery (By far the most common battery used today) is to put them through charge-discharge cycles. Leaving them plugged in all the time will degrade their life (At least, that's from my experience. I've heard some conflicting arguments)
"Never argue with stupid people. They will drag you down to their level and then beat you with experience."
-Samuel Clemens
