LED's tend to use very little energy. The tracer is supposed to use the power off your regular power. But i suppose you could rig up a small battery pack to it. You could perhaps rig up a connection to a MOD stock or a MOD Grip that holds cr123's and just add a few contacts and wires and voila, a self contained Grip or stock battery pack for your tracer lol.
They must have a transister somewhere to be able to control the voltage to the LED. I cant imagine them using higher voltage LED's because the battery voltage range used by airsofters 7.2 - 11.6v is too great. too high and the LED's will fry, too low and the the LED will not receive enough power to activate the LED.
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