NHTSA Complaint #11439922 — 2017 SUBARU FORESTER

My 2017 Subaru Forester battery died in June 2019, leaving me stranded in a parking lot on a Sunday 50 miles from my home. The battery was still under warranty & was replaced by Subaru. I was told by the Service Manager that the batteries only last approximately 2 years. In early Oct 2021, my car sat idle for 10 days in the airport parking garage at JFK Int'l airport in NYC while I was away. When I returned home, the battery was dead, again stranding my approximately 50 miles from my home. I had to get a jump from a tow company who found that the red terminal on the battery was completely corroded. He advised that I would need to get a new battery when I returned home. I brought the car to Subaru the next day & was told by a tech in the service department that the battery was fine & was at 100% capacity but that the issue was a defective cable connected to the battery which they replaced. I had occasion to bring my Forester to Subaru for service yesterday (11/8/2021) and had the battery checked. This time a more thorough check was done & although the battery again tested at 100%, when it was checked for its capacity from a "cold start", it tested as weak. Again, Subaru replaced the battery.