Mauer started behind the plate against the Mariners to mark his 832nd game caught, which passed Battey's 831 games behind the plate, set during this time with Minnesota from 1961-67.
"I just found out about a few days ago," Mauer said. "It's pretty neat to think about. He was a great player for this organization. So to pass a player like Earl Battey is special to me. But having said that, it's something I'll probably look at more in the offseason. We're in a little bit of a funk right now."
Mauer already passed Battey for first in Twins history in starts at backstop with his 795th start on Aug. 18 in Seattle.
But Mauer has also been seeing plenty of time at designated hitter and first base this season, and it's helped keep him on the field after playing in just 82 games last year due to various injuries. Mauer ranks second on the team in games played with 119 -- 61 games at catcher, 32 at DH and 25 at first base.
"He's healthy now," Twins manager Ron Gardenhire said. "I think we've handled it pretty well with him being able to play first base and DH. He's stayed healthy, and on the baseball field."