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It doesn't look like many people know about this, but I'm sure at least a few of you would benefit.
If you don't like using a battery icon in the statusbar, try TEAM battery bar. It adds a strip along the top or bottom of your screen, either in a single or changing colour. It can be hidden when on full-screen, and has other configuration options too.
It's free, with a few extra options in the pro version. Screenshot related, look right at the very top. I have mine left to right, 3px, top aligned.