I've ordered a new 3rd party battery for an old laptop.
After unpacking I could feel a lump in the middle of the battery about 1 cm across, something under the plastic however the plastic hasn't cracked.
The battery charged fine.
Googling I found lots of Macbook battery issues. Is this similar? Should I return it?
If it's cosmetic, I'm not fussed. But I am concerned if it will blow up or damage the laptop.