Nintendo 64 Game Cartridge Battery Replacement WITHOUT LOSING SAVE FILES.

crwdns2936079:0crwdne2936079:0

crwdns2935359:0crwdne2935359:0

crwdns2935357:0crwdne2935357:0

crwdns2935361:0crwdne2935361:0

crwdns2935365:0crwdne2935365:0

crwdns2943215:0crwdne2943215:0

1 × Gamebit 3.8mm
1 × Phillips Screwdriver
1 × Soldering Iron
1 × Lead-Free Solder, 60% Tin 40% Lead—I advise you use Solder that is 40% Lead. I haven't tried this method with Lead free Solder and don't plan to.
1 × Soldering Pump
1 × Multimeter—Make sure it can read Voltage and at least a 200 Ohms reading.
1 × Spare Rag—To clean the Soldering Iron.
1 × 6-in-1 Screwdriver

crwdns2943213:0crwdne2943213:0

2 × CR2032 Battery Socket (Holder) Replacement - Designed for Nintendo Cartridges—Can be easily found online
2 × CR2032 Lithium Battery
1 × Spare Copper Wire, 1-2mm Thick Cable, Stripped—At least 2 Metres.

crwdns2915888:0crwdne2915888:0

crwdns2935375:0crwdne2935375:0 crwdns2915442:0crwdne2915442:0

crwdns2918526:0crwdne2918526:0

crwdns2935377:0crwdne2935377:0

crwdns2935379:0crwdne2935379:0

crwdns2944171:0crwdnd2944171:0crwdnd2944171:0crwdnd2944171:0crwdne2944171:0