It's a pretty good battery! However, if you want to put it in a Redmi 9C then do not buy this one because it is smaller than the regular 9C and the cable does not reach so you have to cut very carefully the protective tape to reach. I would give it 5 stars but I was bothered by the fact that it says 9A/9C while it does not fit in the 9C otherwise it is very good and works, it heats up a little more than the regular one but mainly when charging