Yes! I had three NiCd to every one NiMH, & the NiCd would all be flat within minutes; then I'd switch to the NiMH for some actual fun & within 30 minutes they're all spent for the day. Sometimes I stripped the single-use flat cells out of used Polaroid film packs, for just a few minutes of superior power:weight ratio on my littlest RCs
Then there were the flashlights we'd use for hours but if you put the same cells in the GameGear, dead in no time.
LiPo cells were like a revelation...
Come to think of it, the PSP had an optical drive which was a battery hog too; I remember a friend being elated that I'd found an aftermarket pack with more mAh.
According to the totally impartial LTT review of the Ally it’s worse than the Deck in every way but if it’s plugged in and you’re using a kb+m then it’s only a slightly underpowered laptop and you should totally buy it over the Deck
So I guess the “power modes” that can’t run on battery