Most rechargeables seem to have standard cells, but they are welded together in a weird proprietary package. Technically though they have standard rechargeables.

Another issue is I don't want batteries in my keyboard, mouse, or electric razor. All these things I use next to another thing with a power source. It's pointless to have them be rechargeable. Yet it's becoming harder and harder to find keyboards, mice, and razors that are wired. Cordless mice in particular are a blight on society because the extra weight of the batteries aggravates carpal-tunnel and is a health hazard.