Holy crap! After a LONG time of cycling and trying to recalibrate an aftermarket battery I got with my PowerBook 150, it just shot up from 4 minutes to 40 minutes runtime after a day on charge! May have revived it!!!!
The PowerBook 3400c's power board is right under the trackpad, and as such heats it up quite a bit after running for a while! Heated trackpads should be a real feature, my fingers can get pretty chilly in the basement, and the trackpad actually can help haha.
I think one of my PowerBook 3400 batteries just died... Had it running to archive software and then after shutting it down, it was all of a sudden dead, and it won't charge back up. 1 down, 3 left.
I was just playing some loud bassy music on my eMac and noticed the CRT showing some light flicker-like effects. I didn’t put two and two together until it went away when the music stopped. Those are some strong magnets!
NiMH Batteries are weird. I have a ThinkPad with one, and earlier today it would shut off immediately when the charger was unplugged. I ran the battery recondition utility and now it works again, and appears to be holding great charge.