Hi to all. I have just pickedup this hobby. Just have a few questions...
1. Which brand is real ? Surefire, Ultrafire and Fenix ?
2. Do they copy from each other ?
3. Is CREE the brightest we can have ?
4. Some lights can put either
2 x CR123A Rechargeable 3.6v/3.7v batteries or 1 x Ultrafire 18650 3.7v 2400mAh battery. Does that mean that the 1 x 2400mAh battery is brighter?
Thanks.
1. Not sure what you mean by "real". Surefire makes high quality lights in America. Superfire and Ultrafire make good quality lights; some of the lights are visually similar to Surefires' lights, and can interchange lamp assemblies. Superfire and Ultrafire also make many lights that have no Surefire (or Fenix!) equivalent. They offer enough innovative, quality products that I do not consider them a clone shop.
2. Surefire and to a lesser extent Fenix change their product lines slowly - a new model is a major event around here. Ultrafire (and probably Superfire, I don't follow them) are continually updating product, using a sort of lego approach - plastic lens goes to glass, plastic reflector goes to aluminum, higher quality (bin) led is used, better driver module, new finish, etc. It seems to me that UF has a new tweak every month, and a new product (change in body style, more expensive components, less expensive light) almost as often.
3. CREE is currently the brightest LED I know of; they're also the most efficient, so they (and Seoul Semiconductor, SSC) are preferred. (well, strictly speaking, individual samples of other LEDS overdriven might be brighter, while they last :laughing
Don't ask that question around the incandescent (hotwire) crowd. Their fun begins where ours ends; it just doesn't last as long
4. There are LED brightness differences due to input voltage and current. However, the measure you gave (mAH) is current x time, and represents battery capacity. So a driver that pulls 1A will run less than 2.2 hours from a 2200 mAH battery (due to losses in the circuit). Search here or at flashlight reviews (
http://www.flashlightreviews.com/features/runcomp.htm) for runtime plots. Usually the higher voltage is brighter, but the higher capacity lasts longer.