Chosen Solution
I replaced my battery with a new part from a reputable UK seller, and the device continued to operate fine for two weeks, however the battery calibration appeared to fail a couple of days ago and now the device is running at approximately 1% of the expected performance when on battery (5+ minutes to boot as opposed to a few seconds), and yet when connected to the charger it runs fine again. Do I have a faulty battery?
Alistair, Good afternoon! I have seen this issue many times with replacement batteries. More than likely you did get a defective battery. Check with the seller to see what their warranty period is and try to get a replacement. I just had a note 8 do this same thing a few weeks ago. Hope this helps! Roy
