Battery indicator is misleading with two batteries

[dbanetto]

Bug Report

Current Behavior

The low battery will say that I have 5% left when one battery is low but the other battery has plenty left. See screenshots below.

Expected Behavior

The battery indicator will only show when the overall charge of multiple batteries is low, not when a single battery is.

Additional context/Screenshots

Environment

• Starship version: starship 0.26.4
• Shell type: zsh
• Shell version: zsh 5.7.1 (x86_64-pc-linux-gnu)
• Shell plugin manager: zgen
• Terminal emulator: gnome-terminal
• Operating system: Linux (Arch Linux)

Relevant Shell Configuration

zstyle ':prezto:*:*' color 'yes'

## zgen
source $HOME/.zgen/zgen.zsh
if ! zgen saved; then
  zgen prezto

  zgen prezto history-substring-search
  zgen prezto utility

  zgen save
fi

# conditionally run with starship
if command -v starship > /dev/null 2>&1 ; then
  eval "$(starship init zsh)"
else
  prompt pure
fi

Starship Configuration

I have not have a config file.

Possible Solution

• Calculate the "total" battery (total remaining charge / total capacity of all batteries)
  • This could be done here or as a possible patch to the battery crate & used here
• Use the battery with the highest remaining charge for the remaining

[matchai]

Interesting! It looks like we can certainly add logic to handle multiple batteries:
https://github.com/starship/starship/blob/master/src/modules/battery.rs#L78