An example- I connect the buds to my phone and put into ears, it shows 60 % battery, whithin 2 mins it shows 40 % and exactly after next 4 mins it alarms low battery and shows 20 % battery, at last after next 2 -3 mins it again alarms low battery.
This is the incidence that happened a few minutes ago and similar ones have happened time and again in past with me. Now reporting to you.
Now I test it once again properly, if not satisfied, I will return these.