Monitor BAT1 instead of BAT0

[guy0nabuffalo]

Is there a way to change which battery is monitored? The one I need to watch is located at /sys/class/power_supply/BAT1/capacity

[guy0nabuffalo]

I unplugged the laptop and just let it run until it died. Apparently it has two batteries. Once BAT1 ran out it did show BAT0 declining. I'm good with this.
It would be super cool to have the ability to monitor BAT1 as well.