This is a low energy-density device, which stores electricity directly by charging two conductive plates with static.
（和电池相比，）这是一种“低能量密度”设备，电能被直接存储在两块静止的导电板上。
2
An adaptor is attached to each gadget (often as a specially designed replacement for its back cover) with three lugs on its back for making contact with the charging mat's conductive surface.
Relationship between the nature of conductive filler (charging quantity, shapes and particle size) and the conductive performance of filled conductive paint is discussed.