the shortest-lived accessory: battery!
Have been on rechargeable-battery laptops since 1984 (sic: that's 19 yrs).
I believe my grey hair results from those &%^$#@! batteries.
Haven't seen one that lasted longer than 9 months to a year. Now have 3 laptops (mobile RV/cruising sailboat lifestyle), all of which die instantly when removed from mains power.
The Most Useful one is a 1993 that runs on 12v from the mains; hence (with a little soldering) I can operate it in boat or RV from the prime battery. The others can operate off a converter to 110 (wires, wires everywhere!).
New batteries? Ha! Cost more than the computer is worth after a few years.
The worst part of the manufacturing scam is that the sole protection against mains power surges seems to be having the battery in its bay. So I end up lugging the 2# dead battery around for years just because of planned obsolescence!!