I blew a red Lux III just a few minutes ago. 4.8v pack fully charged (so around 5.2 volts). 1 Ohm 10 watt resistor (that's what was for sale at Radio Shack). The LED blew. Voltage measured across the LED read 5.05 volts. Current to the LED read 1505mA.

Somebody clue me in.