Today in "Knuckles Should Not Be Trusted With Electricity:"
In 2006 I bought an APC UPS after my craptastic power company destroyed a bunch of electronics. It was a decently high end model for the time. I've replaced the batteries on it a number of times over the years. I mentioned in Mindless that I bought a new set last week. The arrived a couple nights ago. I attempted to install them and realized they were too fat. Just a couple mm out of spec, but still enough that two of them would not fit side by side in the enclosure. I only grasped the extent of this problem when I had them most of the way in. Undaunted and dunderheaded, I attempted to attach the wiring harness. Third party batteries don't come with the two part APC wiring that's necessary, so I've kept the same pair since 06. As I futzed with the larger section of the harness a HUGE SPARK went off, making a loud crack and scaring the bejesus out of me. As a certain trio of car British idiots are fond of saying "the poo came out" (metaphorically speaking, of course.)
I did have the foresight to attempt the battery replacement with the unit unplugged. While I readily confess I am "paste eating stupid" I am not quite at the "needs help getting the top of the paste jar" level. I extracted the oversize batteries and noted that not only were they a bit too fat, the terminal polarities were reversed from spec. It's a miracle these batteries haven't caused a house fire. I also noted that one end of the wiring harness was now blackened like a Metallica song. Amperage is no joke, even at 12v.
Dejected and distraught, I put down the UPS and all four batteries and left them alone for the rest of the night. This afternoon I finally picked up the project, all but sure I'd be administering last rites to my trusted APC. I felt genuine sadness. A UPS is not exactly a device one grows emotional attachment to, but the truth is modern APC products are not nearly as good as their mid 00s ones and my experience with CyberPower has been mixed as well. Also buying a decent new UPS is an expensive endeavor. I figure $400 minimum. That's ahem about 1/10 of the budget for a new Macintop.
Well, I am pleased to report that after cleaning off the singed terminal to the best of my meager ability and re-installing the old batteries (which are past life, but at least the right size and polarity) the APC kicked on with its usual chirp and appeared to be as good as ever. I am now going to buy name brand APC batteries ($100, come with a new harness) and leave an excoriating review of the third party ones I bought on Amazon.