One of the NES carts I'm giving my nephew for Christmas has a battery backup (Adventure of Link).
I'd like to install a fresh battery before giving it to him. The reviews for batteries with tabs already attached make me leery of them.
I think I'm better off with a fresh name brand one.
I seem to end up soldering to coin cell batteries a few times a year, so I'm not new to it. (just did the cmos battery in my laptop last month)
Basically, I scuff up the battery with sandpaper, apply liquid flux with a pen, solder the wire or tab, then try to solder that to the battery.
Getting it to stick always seems to take too long and the battery always gets hotter than I'd like.
Is there some trick to doing this that I don't know about? (aside from using an ultra$onic welder)