To replace your battery in your Xiaomi Mi Note you'll first have to take off the back case. To perform this task you'll need a small suction cup to pop off the back because there are no screws. Once that is complete the battery will be visible. Disconnect the one lead connector to the battery then use a metal spudger set to remove the battery because there is glue holding it in place. Run the spudger knife slowly across both sides until free. Remove the old battery and replace the new one in its place and reconnect the lead connector to the new battery. Now all that's left to do push the case back on and power on your cell phone.

Refer to the troubleshooting page below.

Xiaomi Mi Note Troubleshooting