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.
I have still yet to see any other media library handle so many tens of thousands of audio files of varying encoding & naming conventions, so smoothly; “Media Monkey” etc were oft recommended but never once up to the task. Until just a few years ago, it was remarkably convenient for ripping a CD, too; correct metadata & all.
For a short while, WMP was to music files, as Calibre is to ebooks.