Why is my (new) battery overheating?
I just bought a new battery for my Macbook Pro 13" (Mid 2012) here on ifixit. I installed it following the guide. I was told that, obviously, as my old battery was gone and I could only use my Macbook when attached to power, that a new battery would mean less overheating. The fact is after I replaced my old battery with the new one the battery overheating has remarquably increased instead of decreasing. It gets even worser when I plug in the charger.
I don't think that is healthy for my Macbook. Moreover I don't think it's normal as the overheating starts even when running one or two basic applications.
So my question is: could it be that the purchased battery is somehow defective?
Thanks for your support :)
Is this a good question?