what I replaced because the factory one swelled up, as far as I know the phone has a problem with power management, the battery does its job but with high brightness it can last one to two hours. I gave five stars because I believe it's a problem with the phone, as I found some repair links for this issue on YouTube. Now I use it as a second backup phone and it doesn't bother me anymore, I assume the battery is fine

Not sure if I was simply unlucky, but after make the battery replacement the bottom edges of the screen started to change color.

Good battery, seems to be working fine for the 10 days I've had it, although it's not the one shown in the picture but a Chinese imitation of the original. I believe the product photo on the marketplace should be changed because it simply isn't the one being shown. Instead, it's an imitation of the original and not the Xiaomi one. For this reason alone, I will give it 3 stars. If the battery lasts after 5 months, I will come back with a new review. That's all