I think I got the same model at work. I didn’t realise because I used an external keyboard and when I checked online, the battery was already replaced once. I work in a lab and was so scared I initially placed it under the chemical hood until it had no battery.

I got to take it home (much later) and ordered a repair kit from iFixit and each step was explained for dummies and it was a blast to replace it. The one downside: my first battery I ordered was also bloated and I only realised once it was glued in. But they sent a new one within days and the second one was perfect.