Sure, it's possible to make the battery removable, but why would they do that? It was the manufacturers (e.g. Apple) who decided to make the battery non-removea

Sure, it's possible to make the battery removable, but why would they do that? It was the manufacturers (e.g. Apple) who decided to make the battery non-removeable in the first place, as it allows for a more compact design and more revenue. Also the batteries would have to be ordered as a spare part years after the product launched, and most cheap manufacturers are horrible with sustained support.