If you don't have at least two wireless adapters for your pcs, yes you have to have a network cable in order to connect two pcs.
they use rechargable batteries
On 24th June 2008 the number of PCs worldwide was said to have hit the 1 billion mark. By 2014 it is estimated to have doubled.
another CR2032 battery (from a different brand) would work flawlessly. if you are asking about substitutes, than any 3v or pair of 1.5v batteries would work, as long as you could fit them inside the device. Some brands called the same batteries as 2032. You can check out the <a href="http://www.24hrbatteries.com/shop/pcs-lithium-2032-battery-free-shipping-p-92.html">2032 Lithium Battery</a> here.
IRS Router
The console does not require batteries, but the WiiMotes do require 2 AA batteries each.
lithium ion
Only the active EMGs require batteries. EMG also manufactures passive pick-ups which do not require batteries.
Micro R/C helicopters require batteries. Micro R/C helicopters require double A batteries. You will need plenty of batteries. http://www.ehow.com/how_6505592_control-micro-flyer-helicopter.html
No, Beats by Dr. Dre Solo headphones do not require batteries.
Yes, they do.
No
No. Any wireless system that is not connected to a power outlet will require batteries.
Yes, the instruments require batteries.
No, film cameras do not require batteries to operate. They rely on mechanical components to capture and process images on film.
The most commonly used battery type in headlamps are AAAs. Many headlamps will require three AAA batteries to function, and will suggest using alkaline batteries.
Baseballs don't require electronics so you don't need batteries for them