What type of solder for batteries?
So my cordless phone needs a new battery. The thing is it's just 2 AAA batteries wrapped together with a special connector. So instead of purchasing this ridiculously overpriced replacement product, I can buy some better rechargeable ones of my choosing and use those.
Now I very rarely solder. About the only thing I'm good at is melting the stuff and that's about it, but I know I'll need to melt some solder to hold the wires into their contact positions on the new batteries. I just don't know which would be good. These will be standard rechargeable NiMH batteries.
better off to just search the web and find the cheapest replacement you can find. what is the battery part number?
The correct way to connect batteries is with a tiny spot welder. Reg solder takes too long and transfers too much heat. It can be done, but its not the right way and will probably lower the life of the batteries. I would imagine reg 60\40 solder would be fine.
Some battery terminals that are not specifically made for soldering may be plated with a material that is difficult to "wet" with solder.
In such cases it may be necessary to rough up the surface with (for example) a nail file or sandpaper to expose the underlying metal that may be more solderable.