batstats

A simple bash script to get current battery status on Linux

Provides info about

• Status (charging / discharging)
• Current / max voltage (V)
• Amperage (mAh)
• Capacity (percentage)

Depends on

• bash
• bc

Note

This thing should work on most devices, but here are some instructions and explanations what to do if it don't.
This tool provides information based on variable values of power_supply class. And because of some vendors just love to modify kernel as they want, the power_supply class structure may vary from device to device (especially on Android devices), so some data in output might be missing or incorrect. The variable names used in this script are equal to variable names in the original Linux kernel. You can find more info about power_supply class here. You can also get a list of your variables using cat /sys/class/power_supply/battery/uevent and if their names don't match the original names, you can easily edit them in script code. It is also possible that in some retarded kernels measurement units are changed (like mAh instead of µAh), so you also may need to change division coefficient in code (come on, there are less than 30 lines of code, don't be lazy :D).

Installation

Download batterystats script, copy it to any directory listed in your PATH variable (e.g. /usr/bin/) and make it executable using chmod +x batstats.

Usage

Once installed, you can simply execute batstats command in terminal to get information about battery. You can also combine batstats with watch applet (for example, watch -n 5 -t batstats will refresh information each 5 seconds).

Output example

Current battery information
---------------------------
Status: Charging
Capacity: 99%
Voltage: 4.180V / 4.200V
Amperage: +196mAh