What is batly?

Batly is a small tool that lets you check the battery health of a Samsung phone directly from your computer. It reads information the phone already reports and displays it in one place instead of you having to dig through hidden menus or use a command line yourself. What it shows includes the battery health score, known as ASOC, when the phone reports it, along with an approximate count of how many charge cycles the battery has gone through. It also shows the current charge level, temperature, and voltage, plus the battery's condition, whether it is currently charging, what power source it is using, and what battery technology it uses. For anyone who wants to dig deeper, it also displays the full raw output from the underlying Android diagnostic command it reads from. To use it, you first need to turn on Developer options and USB debugging on your Samsung phone, then connect the phone to your computer with a USB cable that supports data transfer, not just charging. After that, you open Batly, click the scan button, and approve the USB debugging prompt that appears on your phone. The tool then reads the battery data and displays it. The README credits a Reddit user, EvanMok, whose original guide for checking Samsung battery health this project turns into a compiled, easier to use application, so you do not need to run the manual command line steps yourself. The README is short and does not go into detail about how the app is built, what platforms it supports beyond Samsung phones, or any other features beyond what is listed above.