It's probably more a case of there never being a silver bullet.
The main caveats seem to be - don't charge when hot or cold (applies to old 5V charging technology as well) and don't go immediately from charge to heavy load (immediately going to heavy load = rapid depletion = high heat = metal structure deformation in the battery, same as it ever was, but "heavy load" on a phone is less frequently encountered than on a dedicated device with motors).
The people that practice battery voodoo insisting that it helps are just going to trash their batteries faster with a fast charger.
It's all about temperature until we learn otherwise. I think that the article supports that.
And the article is generalized - noting that fast charging assumes balanced cells common to a new device, not all.
I'd have to warn that the same is true for regular chargers - if the battery has suffered from past overheating, it may last longer by slow charging but - define slow charging.
Is that usb charging? Device off only?
I do agree from the phandroid.com comments I've read that people are going hog wild over the new Samsung ultra fast charging technology. There's absolutely no talking to them because teh Samsung is teh best and everyone else is circling teh drain woo hoo!
Many of those people are bragging about being able to fully deplete a battery in a few hours but so what, they can just fast charge and do it again, all day long.
I don't know how you can deplete a battery on something like an S5 or S6 in a few hours without serious heating.
The previous crowd doing that just bought new batteries, no big deal. The ultra-fast crowd abusing theirs are going to be in for a world of surprise.
Otoh, I doubt normal users are going to notice a big difference.
Just my opinions.
