Article 5A8BD Should I calibrate my 2-in-1's batteries ?

Should I calibrate my 2-in-1's batteries ?

by
LegionOfHell
from LinuxQuestions.org on (#5A8BD)
I own a Dell Latitude 5175, recently I bought a brand new keyboard which has a built-in battery...

Under Linux, My 5175's battery's health is 93%(it was 98% like a month ago), and the keyboard's battery's health is at 97%...Here is a photo: https://ibb.co/WkqpFy6

(0) Why did the main battery's health go from 98% to 93% over a month ? is it natural ?
(1) Should I do a calibration ?
(2) Should I worry about changing the battery that has 93% health ?
(3) At what health percentage should I worry about changing the batteries ?latest?d=yIl2AUoC8zA latest?i=mjSb8H31kc0:vgt_Z4w6YuE:F7zBnMy latest?i=mjSb8H31kc0:vgt_Z4w6YuE:V_sGLiP latest?d=qj6IDK7rITs latest?i=mjSb8H31kc0:vgt_Z4w6YuE:gIN9vFwmjSb8H31kc0
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