This page shows the different variations of the Naładowany akumulator from an Icons8 icon pack. Feel free to resize and recolor the icon, and then download the icon in PNG format for free. Icons are available in PNG and vector.
The icon is shaped like a rectangle with curved edges. The right side of it has a small rectangle indent poking outwards. Inside the rectangle there are 6 lines equally spaced starting from the left and stopping a little more than half way.