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Tube🍂Time

then i put down a little 3d-printed plastic spacer, and then the first nickel strip goes on top of that.
21 September at 15:50 | Open on mastodon.social
8 comments
Tube🍂Time
Tube🍂Time

two cells done, now i just need to weld them all together.
21 September at 15:51 | Open on mastodon.social
Tube🍂Time replied to Tube🍂Time

now you see the trick. the first tabbed cell goes positive terminal down. the tab sticks out in the groove in the front. then the other cell gets arranged in the little trough that holds it at the correct angle.
21 September at 15:52 | Open on mastodon.social
Tube🍂Time replied to Tube🍂Time

then i bend and mush the cells together after welding, and line it up for the last cell. the trough has enough room to support 2 cells.
21 September at 15:53 | Open on mastodon.social
Tube🍂Time replied to Tube🍂Time

i didn't grab a photo of me welding the solder tabs, but it's a similar process. lastly i put a length of heat shrink over the whole thing to hold it all together and insulate it. sadly the precut length of heat shrink is just a tiny bit short. oh well.
21 September at 15:55 | Open on mastodon.social
drewelmore replied to Tube🍂Time

@tubetime Very cool! But what did you use for a disclaimer? :-P

21 September at 15:56 | Open on mastodon.sdf.org
Tube🍂Time replied to Tube🍂Time

quick fit check, and it works! these cells have a button on the end that is 1mm longer than the original, so i had to flip the battery pack around to get it to fit.
21 September at 15:56 | Open on mastodon.social
Michael Katzmann🐈 replied to Tube🍂Time

@tubetime ..yeah, I had to do the same thing to replace the aging backup battery in my HP8665A sig gen.
21 September at 18:13 | Open on mastodon.radio
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