First I hope I'm in the right forum. I am running 2 3w leds with a 5v rf transmitter. Having problems fitting enough voltage and mah in a small area. I'm trying to fit all this in a 1inch square aluminum tube by 2inches long. Batteries are a big issue was wandering if there is anything I can do toto prolong batteries it seems the rf transmitter draws a lot of juice. Have tried li-poly batteries but die out to quick. Trying to get at least 6 hours of work out of the leds. With the 2 3.7 volt lipoly in series only getting 1hr 250 mah per battery . Also tried aaa rechargeable 1.2v with 800 mah per battery. Maximizes space leds last for about 4 to 5 hours but can only use rf in the first hour. Please help me it's driving me crazy.