Gba Flash Cart

[Fyvve]

My flash cart wont hold saves anymore so i decided to change the battery in it. I did and it worked for a while but now it has stopped. I had to hot glue the battery terminals to the battery because i couldnt get the solder to stick to the battery. It's just a little button/watch battery. So now that im redoing it i want to solder it all together. Anyone know how i can make the solder stick to the battery? Or anyone want to just buy the cart from me cause i am about fed up.

 

[Squidge]

Make sure you have a suitable soldering iron tip - something like a chisel tip with a big surface area, ensure to heatup the battery and not the solder, and don't take too long - the heat needs to be transferred as quickly as possible to prevent damage to the battery.

 

[Crocomire]

what cart is it, i might be interested