I'm looking to make a tri-rebel bbw led saber with a 7.4v battery and an MR soundboard. One forum on here says the MR boards should be run at a voltage of 4.5-6v. But I've found nothing on amperage. I need to know these two values so I can input them on the led calculator (should work for a board too right?) and get the right resistor to put between the battery and the board. Don't think I need any between the board and leds since I'm wiring just the two blue diodes in parallel, and according my info, they're 3.5v each, so they should suck up about an equal amount from my 7.4v battery. And I'll be putting a 20mA DynaOhm™ Variable Resistor on my a/v switch anyway. Does anyone know these two values for sure?