Mart Cobra Tabbed CR1616 Battery with Solder Tabs 10x CR1616 3V Lithium Battery Gameboy Cartridge Battery Ruby Gameboy Advance SP Fire Red Leaf Green Emerald,1616 Battery GBA Gameboy Advance Cart Save

exactly what I was looking for. had two cartridges, one emerald and one ruby. neither worked because of dry battery. if you have a soldering iron and a steady hand, its about 5 minutes to install. super easy. Can't vouch for the lifespan, but my guess is this replacement should last years of playing. just make sure you have the orientation correct (don't install it backwards lol).

The batteries work well and for the amount you get for the price you can’t beat it

A put a couple in my old gameboy games and they've worked like a charm. Pretty easy installation too

I have 8-10 Gameboy/Gameboy Color games with dead batteries and I wanted to replace those so I can save my games! These are exactly what I needed. They fit great, seem well made and VERY easy to install thanks to the tabs. They're small so you may want to use tweezers when installing them!Overall, this package is a great value for the money. Only time will tell if the battery life holds up but so far, so good!

exactly what I asked for! Replaced the battery in my GBC cartridge and it worked flawlessly!

Affordable 10 pack. Fits perfect and I doubt they will last as long as the OEM batteries (20 years!) but a great replacement.

Perfect CR1616 size replacement with tabs. I was able to replace the battery in one of my game boy color cartridges by soldering in a new one. I wish I had known about this earlier. Make sure you look up what size is needed for your game. Pokemon Yellow required CR1616.

Checked with multi-meter. Batteries have a 3.33V charge, which is within the spec for a 3V CR1616 battery. I use these in Game Boy/Game Boy Color games as a replacement battery for saving. Only time will tell if they are quality, but first impressions are all pointing in the right direction.