NHTSA Complaint #11437432 — 2019 SUBARU ASCENT

I have a 2019 Subaru Ascent and my battery has died 3 times now. The first time was on May 2019 and the car would not start. I had to get it jump started by AAA and drove to the dealer where they ended up replacing the battery. The liftgate had somehow been triggered while in my garage and did not fully close and drained the battery. At the time it was suspected I had accidentally hit the FOB to trigger the liftgate to open but that never happened before and has ever happened since. Then in April 2020 car wouldn't start again. Car was jumped by AAA but when I attempted to drive to dealership it died again and had to get a tow truck to bring car to dealer. Battery was tested but not replaced. Dealer said I was not driving car enough (not driving at all during the pandemic) and needed to get a battery maintainer for battery which I did. I used battery maintainer when I was not driving the car regularly and car was fine until Oct 14, 2021. We had been driving car regularly for month so we were not using the battery maintainer as we thought the battery would be charged through the regular driving. But on Oct 14 the car would not start and when I tried to start it, all the dashboard and exterior lights were flashing. Plugged in the maintainer and after several hours the liftgate started beeping and then the front of the car started beeping. I had car towed to dealer and they replace battery again and also changed the power liftgate module to stop the drain on battery if door is open for more than 20 minutes.