Game Boy - New batteries but keep losing savegames

[Wulfara]

Hi. I recently purchased some CR1616 batteries to replace my 1st gen Pokémon cartdridges. I started with Pokémon Blue, played ~20 hours saving and loading without any problems and suddenly I lost the savegame. After some weeks I started playing Pokémon Yellow and the same thing happened after ~30 hours playing. I have no idea on how this happened and I'm now full paranoid/afraid of playing 2nd gen Pokémon and losing my digital friends again after a lot of time playing :_(

Some things to keep in mind:
- The batteries were brand new, purchased two months ago and they were working fine. I have a lot of experience soldering and they are solidly welded.
- I replaced the batteries on both Blue and Yellow cartdridges (didn't reuse the same battery)
- I played the games on different consoles, so the console itself shouldn't be the problem. Pokémon Blue on a GBA SP AGS-101 and Yellow on a GBA IPS V2 mod
- The new batteries aren't dead, I tested them with a multimeter and they still mark 3V
- The last time I played Pokémon Yellow I loaded the savegame without problems but I DIDN'T SAVE THE GAME (because I played very little time and do nothing useful) so the savegame was OK and not replaced by a new savegame. The next time I launched the game the savegame was lost.

Any ideas? I really want to identify the source of the problem. Thank you in advance

 

[Shadow#1]

Hi. I recently purchased some CR1616 batteries to replace my 1st gen Pokémon cartdridges. I started with Pokémon Blue, played ~20 hours saving and loading without any problems and suddenly I lost the savegame. After some weeks I started playing Pokémon Yellow and the same thing happened after ~30 hours playing. I have no idea on how this happened and I'm now full paranoid/afraid of playing 2nd gen Pokémon and losing my digital friends again after a lot of time playing :_(

Some things to keep in mind:
- The batteries were brand new, purchased two months ago and they were working fine. I have a lot of experience soldering and they are solidly welded.
- I replaced the batteries on both Blue and Yellow cartdridges (didn't reuse the same battery)
- I played the games on different consoles, so the console itself shouldn't be the problem. Pokémon Blue on a GBA SP AGS-101 and Yellow on a GBA IPS V2 mod
- The new batteries aren't dead, I tested them with a multimeter and they still mark 3V
- The last time I played Pokémon Yellow I loaded the savegame without problems but I DIDN'T SAVE THE GAME (because I played very little time and do nothing useful) so the savegame was OK and not replaced by a new savegame. The next time I launched the game the savegame was lost.

Any ideas? I really want to identify the source of the problem. Thank you in advance

Was these pre-tabbed batteries?

 

[Wulfara]

Was these pre-tabbed batteries?

Yes they were. They were specifically these ones.

 

[Shadow#1]

Yes they were. They were specifically these ones.

And your soldering them in at proper polarity?

 

[Wulfara]

And your soldering them in at proper polarity?

Yes of course, always double check. Like I pointed out both games were working fine (saving and loading) with the new batteries for weeks before losing the savegames.

 

[Takeshineale128]

Yes of course, always double check. Like I pointed out both games were working fine (saving and loading) with the new batteries for weeks before losing the savegames.

try reflow the sram chip because I had the issue when I replaced the battery and the game (Pokemon Yellow) would not hold a save file in the sram chip.