Re: Charging 18650 and Life Question.
PLEASE if you talk about the different battery/cell types use the adequate terms. Everytime something starts a thread like this they feel like leaving out some part of the name doesn't matter, but it does.
Usually they're referred to like this:
LiIon - The well-known standard Lithium Rechargables (in detail: Lithium Cobalt Oxide)
LiPo - Lithium Polymer cells used in RC applications, fast charging, very flat cells, even more dangerous than LiIon
LiFePo4 - (or LiFePo but not LiPo or LiFe) Lithium Iron Phosphate cells, the newest variant on the block, safe chemistry, less capacity, high discharge rates available
It would be so nice if we didn't see the same happening as with CR123As, two more letters really aren't so hard to type and make a hell of a difference here..
Don't want to offend you, but it really makes it so lot easier..
EDIT: BIG thanks to mdocod for *always* using an unmistakeable wording