Run-Time Plot - Streamlight Jr Luxeon

[Roy]

This runtime plot is for a Streamlight Jr Luxeon flashlight using 2xAA Ultra-Alkaline Supercell batteries.

Equipment used is a Extech Mdl 401021 Light Adapter into a RadioShack 22-805 DMM witha PC interface that is using ScopeView software (V 1.08).

The vertical axis is in 0.05V/div wich is equal to 50mV/div which is equivalent to 50 Fc@1Ft/div. The horizontal axis is 15 min/div.

Be aware that your actual battery milage may vary from that indicated by this runtime plot.

The runtime to 50% max brightness = 1hr 16min

 

[flashlight]

Not very promising...

 

[BentHeadTX]

Thanks Roy,
Alkalines tend to get killed by regulated Luxeons, NiMH batteries will last almost twice as long (can handle the high current load compared to alkalines)
Could you throw some 2100mAH NiMH AA batteries in the Jr. and do a runtime test?

 

[Roy]

"Bent"...no for two reasons...don't have any NiMH to chunk and it's now wrapped as a Birthday Present!

Cant't believe I bought a light to be used as a Birthday present and actually opened it up to play with the light (don't have this one for myself). Guess I am a flashaholic!

 

[BentHeadTX]

/ubbthreads/images/graemlins/yellowlaugh.gif /ubbthreads/images/graemlins/yellowlaugh.gif
I guess the birthday present is now famous.

 

[Glenn]

Would it be "safe" to use lithium AAs in the Streamlight Jr Luxeon?
I am thinking the additional reliability for auto emergency as well as the runtime.

Glenn

 

[Roy]

You need to be careful....they have a rest voltage of around 1.7v per cell or 3.4 for two....can burn out some lights. Contact Sreamlight and see what they say.

 

[Aloft]

Glenn

I contacted Streamlight about using lithiums in some of their other lights. . . specifically the 4AA Propolymer LED and the 3AA Tasklight. They were quite direct. . . use of lithiums would void the warranty and possibly damage the light. But I believe that none of their previous Tasklights, Propolymers or Twin-Tasks are REGULATED, and that seems to make all the difference. If you do ask them (they responded to my email in less than 2 days), please post the response or PM me. . . I really like to "lithium" some of my lights that are in car glove boxes or emergency kits because the alki's are prone to leakage after a time. It would be nice to know that I can do it safely in the Jr Luxeon. . . it's a great light for the money, and I really like it!

Thanks. . . Rich

 

[vcal]

My own informal tests:

Being something of a battery maven, I've tried new alkalines, 2100 NiMH, and Eveready L91 Lithium to compare for brightness and run time.

First, there is almost (with a light meter), no difference in brightness output between any of these battery choices.....

Second, as Roy found, the fresh alkalines will barely deliver 1 hour-20 minutes on a set. The runtime expands to easily over 2 hours when the NiMH are used! /ubbthreads/images/graemlins/smile.gif

Hardly any difference in brightness or runtime was evident with the AA Lithium L91s in my Streamlight Jr.

Did I mention that this great little light also works very well with a Ram tailswitch as well?

This is now my favorite everyday utility walking light because it puts out plenty of light for most ordinary purposes-and costs practically nothing to run. /ubbthreads/images/graemlins/thumbsup.gif