This issue also affected Linux Mint 19.2, and Brian's workaround and fix
in #36 work for that distribution as well.
I used the workaround steps to resume the broken boot, then followed the
fix steps and rebuilt the initramfs using:
# rebuild initramfs
/usr/sbin/update-initramfs.distrib -u
then
I experience the same issue on my Hp Omnibook 510.
The Omnibook 510 uses an expansion dock that allows use of up to three
batteries.
acpi -V lists all three batteries.
I should note that the icon in the gnome-panel does show a correct
combined charge when all three batteries are inserted - e.g.