Originally Posted by
wild animals
Can you guys interpret this?
"* Runs fine with some RCR123A, but not recommended by manufacturer"
http://www.shiningbeam.com/servlet/t...h-N3-II/Detail
I hear that the CR123A batteries help put out more light than AAs, but I don't want to use throw-away batteries. What will happen if I use rechargeable CR123As? Are they saying I need batts w/a circuit to prevent overcharging?
nominal voltage of a standard rechargable lithium cell: 3.7 V (doesn't matter if it's 18650, RCR123, 14500, etc. size)
nominal voltage of a standard primary CR123 lithium cell: 3.0V
The light runs on a primary CR123 lithium cell (3v) or 2xAA (3v) for a maximum input voltage of 3v. The driver electronics aren't designed to run on anything higher, so using RCR123 (3.7v) isn't recommended.
The driver is a boost-type driver which will burn out the LED when given too much input voltage. It works best when slightly below the forward voltage of the LED (3.x volts usually), which is why that light is specced for 3 volts. I wouldn't be surprised if you got away with using an RCR123 cell though; it's only a little bit over voltage.
In my opinion, flashlights that use 18650 cells are more appropriate for on-the-bike use.