Battery capacity tester on Arduino. Updated version!

Hello! In this video we will make a Li-Ion (Li-Po) battery tester, with the ability to charge the batteries.
A simple version of the tester: • Как сделать тестер емк...
Link to the archive with schemas, sketch and libraries: drive.google.c...
Where can I buy:
The cheapest Arduino Pro Mini for crafts: ali.pub/1ny2z4
Buzzer: ali.pub/2hvd87
0.96 "OLED display: ali.pub/2hvdd9
TFT Displays: ali.pub/1ny2rc
Load resistor 10 Ohm 10 W: ali.pub/2hvdwp
Motor with gearbox: ali.pub/2hrtt2
Bluetooth HM-10: ali.pub/2amedo
Bluetooth HC-06: ali.pub/2amdlv
WS2812B 7 LEDs: ali.pub/2hi9h8
WS2812B: ali.pub/1x8oim
The cheapest Arduino Pro Mini for crafts: ali.pub/1ny2z4
Solar panel 5V 4.5W: ali.pub/2gllam
Solar panels: ali.pub/2glli0
Servo drives: ali.pub/2glm6p
Platform for the camera: ali.pub/2glq8j
Digital resistor AD5171: ali.pub/2gi4vs
Motion sensor HC-SR501: ali.pub/2eyil3
Arduino Mega 2560: ali.pub/2gih4z
The most convenient cashback:
LetyShops: goo.gl/Ev5XgI
The most profitable cashback:
Ecomerce: goo.gl/3dDc2w