Source (link to git-repo or to original if based on someone elses unmodified work): https://github.com/zpuskas/linux/blob/master/home/.conky/conkyrc_transparent
This is my quite old, streamlined, but still informational configuration for laptops. It will fit any screen that has at least 768px vertical resolution. The "REMAINING TIME" line shows "AC ON-LINE" when connected to a power outlet and fully charged, time remaining to full charge if battery is charging, otherwise the estimated usage time remaining while running on battery. It also has a separate "TMP" storage space indicator as that’s mounted as `tmpfs`.