Wireless Charging Glyph

Recently needed to come up with a symbol for wireless charging. I've seen this symbol used a couple of times before, so all I did was re-draw it and clean up the lines a little bit.

I needed it to be clear about what it represented, but also ambiguous enough that it applies not just to different phone brands, but different devices and metaphors about what “wireless charging” means (or will mean in the future).