After 4a and 6a, now is the time for 7a to shine!
Though, is it still in early beta and apparently very few models seem to be affected and there isn’t any word of system update to nuke the battery life on this model. But it goes to show that Google is treating the A series really badly.
I have a 3yrs old samsung, heck even a 2019 redmi smartphone which work and did not get a swollen battery. 2yrs is a very short timeframe for battery being toast. Goes to show the way google cheaps out on battery components.