This is a selection of Shell and R Scripts which logs the battery health of your laptop. The script saves your batries current health and charge percentage, and also a computed real charge percentage based on the over all battery health.
To log the script you need to setup a cronjob calling the script every few minuets. I personally call the script.sh every 5 mins (*/5 * * * *).
The output is printed out to a log.csv file from which the print_chart.R script reads.
You may have to update script.sh to point to the correct system files to retrie the battry healt.
You can rung the print_chart.R script when ever you want to update the chart and save it a battery_helth.pdf.