Diy Arduino 12V Battery Tester for Capacity

Hello friends

First of all,I have to thank opengreenenergy for inspiring me to do this project.here is the link:

https://www.instructables.com/DIY-Arduino-Battery-...

After I build this kit,I realized that I need a tester for 12V ups battery ,and solar panel battery.

For this.I started to this project and modify it for my demands.

I made some changes to original schematic, I replaced mosfet with more powerfull IRF3205 also logic level mosfet.I also added a jumper for annoing buzzer to silent mode.

here is my software,with this changes from original one:

-when the cicle is over,print low-v and the capacity in Ah

-instead of current prints time on display

-replaced multiply factor from voltage divider =3,2

-replaced R load with 2,4 ohm