On my system:

$ cat /sys/class/power_supply/BAT0/model_name
5�+1^^�^^�9(-:'&��

Or:

$ hexdump /sys/class/power_supply/BAT0/model_name
0000000 8035 312b 801e 801e 2839 3a2d 2627 8080
0000010 000a
0000011

This means trying to get battery info always returns an error due to https://github.com/svartalf/rust-battery/blob/master/battery/src/platform/linux/device.rs#L36

https://monosnap.com/file/QgWq6JhUNyRENLxBtXkgHTU3CLkCtp
tested some different themes in terminal and figured out that some of labels is hard to read
hash and temperature are hard to read on basically on any light theme.
percentage bar value on solarized dark and homebrew are barely visible.