The energizers I see in the stores are 2500-2700mAH so the layers are super thin, then all I see anymore are the 15 minute chargers. I see the same with duracell also, there was a recent duracell tv ad where they were used by nasa and can be charged in only 15 minutes. I use eneloops so mine are always charged so I don't have to wait even 15 minutes.