This Brak baterii icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,300 icons, all in the same style and quality.
It is a logo for a dying battery. It is a battery shape but with a line through it stating that it is either low or that it is dying. It has lines going vertical to display how many bars are left that are still charged.