Now for the final part. Exercise caution as you did in step 6.

Begin heating up one of the terminals your parity battery is attached to. Make sure you're heating up the resistor pin, the terminal, and the parity batteries cable end as you're doing so. While heating up the solder, gently pull on the cable until it comes loose.

If you happen to pull off too much solder when detaching the parity batteries cable, quickly start applying more solder to the resistors terminal to ensure the connection remains solid. You don't want to go through all this work for nothing.

Do the same thing for the next resistor terminal.

After you've taken off the parity battery, get your Multimeter and test both the main battery terminals and the resistor terminals to make sure that your new battery is supplying a solid 3 volts of power to the cartridge.

Also check for an Ohm reading between the resistor terminals and the main battery terminals on their respective copper lining circuits. You should again get a reading of around 1 Ohm in your tests.

If everything checks out, then that's it! You're done! You've successfully replaced a Nintendo 64 cartridge battery and, if everything went smoothly during the replacement, without losing power to the SRAM chip and deleting your Save Data!