Chosen Solution
What happens with battery cycel counts after replacing the battery? Does it reset the cycles itself after installation a naew battery?
The cycle counts is the amount of times the battery has gone from 0% to 100% So yes, changing the battery will reset the cycle count if it’s a new battery, as the cycle count is associated with that battery. :)
When the iPhone Says Battery Cycle Count is 1 and The Battery is good but actually it drains fast after replace the battery thats because the new battery is a Chinese battery and its Chip is programed to only set cycle count from 0 to 1 after first use and it will say wrong design capacity like for example iPhone 6 Design Capacity = 1795 mAh Current Max Capacity = 1875 mAh and actually iPhone 6 Battery Design Capacity is 1810 mAh so the Diagnostics tool will say the battery is good according to this Informations (1875/1795)*100 = 105%~ Battery Life this is a way to spot a fake battery by diagnostics.
Nothing is “reset”. The cycle count is a piece of diagnostic data acheived by analysing the battery’s reported data. A replacement battery is not going to “reset” the count to zero. The diagnostic tool is going to report the cycle count of the new replacement battery.
