Fenix TK10 battery

At present I am using CR123 lithium primary on my TK10. Since CR123 is expensive, I am planning to use RCR123. I know that the voltage of RCR123 is 3.6 volts. Can the TK10 take the higher voltage of the RCR123?

Thank you so much!

Yes, it can take the voltage with no issues whatsoever.

Thanks again for immediately helping me.

Can I asked a couple more questions?

May I know if RCR123 and CR123 will give me almost the same runtime on my TK10?

Does RCR123 have a low self drain rate?

RCR123's are low self discharge, but they will only give about 2/3 of the runtime.

Li-ion batteries have a pretty low self discharge rate, you should have 80%+ capacity of a fully charged battery after of year with no use. Because of the extra stuff they need to add to make it rechargeable, it has less capacity then CR123s, I'd say 1/2-2/3 less runtime wise. Light-reviews says 55 minutes of runtime with AW's 750 mAh protected RCR123s, 1 hour 49 minutes for CR123s.

Thanks to Gunner and Marduke. Now I will order RCR123 and a matching charger.

Make sure to buy protected batteries. They prevent against overdischarge, overcharge, and too much current from the battery. All of which will damage the battery.

I have a Fenix TK10 on order. I also order the AW RCR's. Has anyone had difficulty using certain types of RCR's in the TK10? I was just wondering because there is a video on youtube "link: http://www.youtube.com/watch?v=alRtwboQ0hc&feature=related and he shows that RCR123 didn't work effectively.

Any thoughts on what RCR's work... or fit the best?

Thanks,

Joe

My broken Fenix T1 overdrives the emitter, giving me only 30 minutes with 2 fully charged RCR and 50 mins with fresh CR. At 8.2 volts, the current is almost 630ma (5 Watts). I hear a high pitch noise when the light is turned on and the beam is becoming more yellow with use.

richardcpf said:

My broken Fenix T1 overdrives the emitter, giving me only 30 minutes with 2 fully charged RCR and 50 mins with fresh CR. At 8.2 volts, the current is almost 630ma (5 Watts). I hear a high pitch noise when the light is turned on and the beam is becoming more yellow with use.

Click to expand...

??? If you know the driver is no good and the emitter is being overdriven, why do you push the voltage up with RCR's??? Why not run it on primaries or one 17670 at lower voltage? I have a Q5 emitter that the driver died on and I simply bypassed it and made it a direct drive and found I can get very good brightness and run time, better than as delivered with one 17670 battery. Have you done some testing to show that it won't work with lower voltage? I would think that you wouldn't want to burn out the phosphor so quickly which so much overpowering of the emitter.

I have been very satisfied with my direct drive light, I got it up to 250 lumens (measured in Integration Sphere at work).

My TK11 runs on half the time or less on RCR123As compared to CR123As ... most prob because it is meant to take 18650...:thinking: ???