xfce battery indicator is inaccurate on macbook air 2007/2008

[ArtTjon]

Xubuntu 20.04 beta
The battery indicator charges up to 82% for max charge.
Battery discharges normally to about 30-40% before unexpectantly crashing the computer.
This bug is also in Xubuntu 18.04.

Due to the unexpected crash Xubuntu and Grub2 can become corrupted and inaccesible! A clean reinstall is necessary to get the laptop working again.

The battery works normal (charging/discharging) in OSX snow leopard.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.17
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.11-0ubuntu24
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: XFCE
Date: Tue Apr 7 02:28:25 2020
InstallationDate: Installed on 2020-04-06 (0 days ago)
InstallationMedia: Xubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)