This is a really timely question for me, personally.
I've spent the last week (actually a bit more) going down this road with my functional 2000. My other, which is currently dormant and dark, is (I believe) the victim of battery acid damage the likes I can't personally repair. It's really unfortunate.
But for the working machine, I made it a mission a few weeks ago to replace the battery. I got the necessary soldering equipment and bought the coin battery option, which arrived from the UK in January. I went this route as I really liked the idea of using an easy to find and replace battery option. I mean, they sell these coin batteries at my local pharmacy. And the new option from Amigakit
looks really nice and clean. And it's cheap! I was planning on making it a more fleshed out "How To" post. I pulled the entire 2000 apart and removed the motherboard. I then de-soldered the old battery stand and cleaned the motherboard thoroughly. Then I soldered in the new kit. Overall, it took up most of my Sunday morning a couple of weekends ago.
After buttoning everything back up again, I went into a bit of a panic. Long story (very long) short, my accelerator board - the CSA Derringer 030 - was contacting my drive bays and the very subtle angle changes caused all kinds of hell.
After a couple of days, I finally got everything working again. Except, the battery I replaced still isn't saving the date and time!
Using SysInfo, I can see that the machine sees the IC just fine. If I set the date/time in Prefs (or DirOpus, or CLI) the 2000 will keep track of time while the computer is on. But I think a trace from the battery pots must have a break somewhere, as the battery can't hold what's in the IC.
Super frustrating. I even threw a hail mary with Thomas' RestartClock program
, but that didn't work, either. I think that is mainly for "waking up" stuck IC's, but I wasn't sure what else to try.
At the end of the day, my IC works but the battery option I tried failed. I'm tempted to replace the battery itself - I suppose it is possible I got a dud.
Another option is to get a 3.6v cordless phone rechargeable battery pack and solder wires to the motherboard so the pack can stay velcroed out of harms way. These batteries usually don't leak and can last quite a long time.
Do you have any more information on this particular hack? If I get the itch again, I might go for it. But if you solder the wires to where the original battery stand goes, then I'll still be out of luck I'm pretty sure.