Cantclimbtom
Well-known member
I am a practical engineer kind of person, but never much electronics (beyond fixing the occasional dry joint on a board etc) but very embarrassingly I am struggling to solder a wire onto a battery, totally failing.
I've got some 18500 button top batteries. I want to solder 3 in parallel and shrink wrap them.
Starting with the button on the first battery, I clean it with some sandpaper, wipe a little flux over it, put the copper wire in place and try to solder it. The solder flows and sticks to the copper wire but seems totally repelled by the battery. I can't even solder just a small blob of solder onto it.
Is this just some weird batteries I have, or is this a normal problem for batteries in general. And do I need a different approach from just solder wire on top?
How should I be doing this?
I've got some 18500 button top batteries. I want to solder 3 in parallel and shrink wrap them.
Starting with the button on the first battery, I clean it with some sandpaper, wipe a little flux over it, put the copper wire in place and try to solder it. The solder flows and sticks to the copper wire but seems totally repelled by the battery. I can't even solder just a small blob of solder onto it.
Is this just some weird batteries I have, or is this a normal problem for batteries in general. And do I need a different approach from just solder wire on top?
How should I be doing this?