SNES Cartridge Battery Replacement

[will2003]

Yeah, you should never, ever directly solder a battery. It will likely ruin the battery never mind your health.

Very true, but there's a ghetto way of soldering to button cells if you can't get ones with tags, bit of a hassle but it is basically:

1 - heavily roughen a small area on the battery with a fiberglass pen - so it's lost that chrome shinyness and instead looks coarse and matt.

2 - apply some proper flux, not crappy Maplins stuff, but ideally something like one of those Chemtronics flux pens. Leave for a few minutes to really act on the metal.

3 - hold the iron just above the battery, maybe half a centimeter at most, then apply solder to the tip of the iron very slowly until a small drop is ready to fall or be tapped from the iron, and try and get it to land directly on to the roughened and fluxed area.

This way, the iron never comes into direct contact with the battery, and the distance the solder falls is so small that it lands on the battery still plenty hot enough to bond with the metal of the battery - but it cools almost immediatley after it bonds due to the heat sinking effect of the flat metal battery. Basically, it's about as little heat as you can possibly apply to the battery, but if you can get it just right it makes a perfect bond to which you can solder a wire to easily (either by repeating the above, or just with the tiniest dab of the iron itself.)

Done this loads on various things over the years, never a problem. But, it involves splashing solder about, so some sort of eye protection is never a bad idea

[Ginger Tosser]

I've just had a search and found this site selling CR2032 battery holders (scroll down near to the bottom). Probably easier to attach some wires to these holders and the cart.

[Blu3Flame]

Whats the point of backing them up when it wont be possible to get the saves back onto the cart?

Thats wrong, it is entirely possible and I do it all the time.