It would of made sense to make the battery longer than 6 years.
This is happening with my blue.And the battery is fine i mean it still worked after 6 ithink about 8.That's when i heard of Missingno. and 'M,showed my friend,he catches them on my game,now eternal battery save memory busted,it only works if i save every 2 minute and don't get any badges,and now the slightest bump will freeze it.