AW protect cells are among the best and most recommended cells on the forum, they can be bought through user AW in the marketplace or from
www.lighthound.com
If your E series surefire can accept
17670s, I'd go with that over 2x RCR123As:thumbsup:
E series bodies often has a "bottleneck" effect: inside diameter decreases from the bezel to the region near the tailcap, as a result 17670s often get stuck about 3/4 in. Only solution I can think of it taking the body to someone who can bore out the body to take 17670s. Although I've heard
17500s + spacer sometimes works also...be sure to include a spacer about 15-20mm in length and insulate the sides [buy some small rare earth magnets, stack them and wrap with electrical tape].
The third option is using a
14670 with some short of a spacer to keep the cell from rattling, but runtime will be significantly shorter:candle:
Since the KL4 consists of a boost circuit, using two lithiums in series [such as the method of 2x
RCR123A] may be more detrimental than beneficial depending on the input voltage of your LuxV. The value varies between every single KL4 made, the KL4 goes into direct drive mode when cell voltage goes above 6V, 2xRCR123A freshly charged will give out 8.4V and can burn out a luxV despite a few reports of success from the forum.:candle:
Surefire cr123As are around 1300mah
make a run using your KL4 until the cell dies, then use the time to estimate your KL4s current consumption.
AW protected cells
17670 [
168S / 600S] : 1600mah
17500 [
150S / 300S] : 1100mah
14760 : 1100mah
16340 [RCR123A] : 750mah
you'll get many recommendations for cell chargers , I use the DSD charger sold on lighthound, there were some reports of AC adapters having premature failures but mine still works for about a year now.:wave:
charge current: 350ma
for more information of AW cells
http://www.cpfreviews.com/AW-Batteries-Chargers.php
hope this helps, cheers! :wave: