2022 tundra a lemon ?

Hi all.
My 22 tundra main shaft busted at 73k so toyota wont fixed it because it out of powertrain warranty at 60k. So I am back and forth with toyota extended warranty for 5 months sitting in GA mall of Atlanta autonation before they rebuild the engine. Once I got it back. The battery die over night every night. I call them and they said it the battery issue. So I replace new battery from Costco and same issue. I bring it to Wesson autonation in florida for that problem. They did couples of recall and REPLACED my engine and jump start my truck to go home after couples day. Same dead battery over night plus no electricity after engine turn off. Cold dead. I have used a battery switch to save it's juice for the last whole year.
Can't even lock the truck. Call them back and said might be bad battery again . I get a new replacement from Costco again. Same issues. I'll bring it back to Wesson autonation for them to check it out. This time they wanted $600 for extended diagnosis. I give up on toyota dealer and turn to thus forums for real end user help.
Ps. Technically 3 engines in 1 year period.
Thanks in advance.

 

if you have a 2022, it outside lemon law coverage for GA at this point.

 

What battery did you purchase?