I stumbled upon an old Thinkpad with an empty CMOS battery. Sadly it was shrinkwrapped, so I took the one naked CR2025 I still had and wrapped it in paper-ish packaging tape to prevent shortcircuits.
It’s working.
FWIW I believe they were shrink wrapped to prevent what’s inside the battery (ie battery corrodes) getting out and to help keep it in place OVER preventing short circuits.
You‘re probably right, but the way I reattached the old contacts to the new battery made the tape absolutely necessary for shortcircuit-prevention.
Also it looks neat
Great job, best KISS principle I’ve seen in a month.
Whenever I have to do this I use one of the couple of ludicrously enormous pieces of heat shrink tube that inevitably seem to come with every assortment kit for some reason. It’s either this or try to find a regular reason to have to solder quintuple-aught AWG cable or whatever the hell they expect those things to actually fit.
Maybe wrapping batteries is the intended use case, come to think of it.
How do you connect the wire to the battery? Soldering it must be dangerous.
Very hot, very quickly. The trick is to have the solder hot enough to weld, but not have the battery or wire hot enough long enough to damage the internals of the battery. It really isn’t hard to do, but you do have to be fairly precise, and you’ve got more wiggle room than you’d think.
spot welding seems more appropriate when batteries are involved.
Basically, yeah.
The original one was soldered to a small „paddle“ which was „tacked“ to the battery. I just taped it together and since the tape is kinda stiff it‘ll probably stay where it should be.
I’ve had to do this enough times that I went and bought one of those battery tab welders for like 40 bucks. It works well enough when I have to use it.
Nice! I recently swapped the CMOS bat in a Compaq Armada M700, however I just went the lazy route and bought one with the plug already attached.
Funnily enough, I did the exact same thing you did on a ThinkPad X60s before selling that
Hell yeah, brother!
