Don't you know anything, Mahoro? I'll try to explain it as simply as I can.
Battery acid is the fuel which gives a battery power, so naturally it's transmited to the device the battery is being used in. When you turn a device on, the battery acid flows out of the positive node into the connected wire in the device. This wire has certain properties that cause the battery acid to cling to it, and a negative charge in the central reaction area draws the acid along the wire to there. In this central reaction area the device applies the battery acid to do the work required. In the case of a wireless optical mouse, the acid flows into a secondary wire in the center of the mouse where it connects with a tiny eye. The eye, facing downward, uses the battery acid to glare at the surface below while another wire records the direction that it's glaring, which is the direction the user wants to move the cursor (the reason why it glares in that direction is tehnical but has something to do with activating the normally-latent telekenetic powers of the human mind). Leftover acid flows on to the transmission complex, where tiny microfibres create holes in the fabric of spacetime through which the intented movement is transfered from the mouse into the CPU of the associated computer. The end result is a plesant experience of moving the cursor on your screen, except when Microsoft supplies faulty wires that allow the acid to escape into the EPR module and cause a feedback loop which destroys the battery.
I say sue. If nothing else, the claim that the mouse is "wireless" is demonstrably false advertising given all the wires we've been discussing.
