I bought a new Samsung Note 9 and it is supposed to have 4000mah battery. Using the app accubattery it consistently shows me a battery health of 91-91% since the beginning! Is this normal? I cannot get it over that value. Because I paid for a new phone but appartently I got an old battery? May I return this phone now? I have been charging always 20%-80% and have it recorded, so I treated the battery according to all scientific standard practices.
It is an estimation and accuracy is not high. You can still request a verification in a samsung center but if i were you i would just ingore accubattery estimated percentage if battery life is good.
I am actually very interested in technology so I know that they degrade and how to treat them. Where I live it doesnt reach 0 degrees and we are just now starting the summer so I don't think 5 months of moderate battery usage (I dont do games) would hurt it so much.
Yep. I meant that if the phone has been conserved at ambient temp for the 1 or 2 years before you bought it a lower than new battery capacity is to be expected.
Hopefully the end of the development of graphene will change all of this!
