Mag 2 c, Maglite 5 cell mag-numstar Xenon , 2 aw 18500 Questions

[MSMAN]

I put together a Mag 2C, using 2 aw 18500 protected 1500 mah , and a Maglite 5 cell Mag-numstar Xenon bulb.

The Continuous Run Time for this lite was 1 hour 36 min. on fresh batteries.

Not as bright as the ROP 8354 Low bulb, But no heat issues and and a longer run time than the 36 minutes that I got with ROP low using the same aw 18500 batteries.

After I have discharged these batteries and recharged them a few times with the DSD charger, the voltage on them seem to peak out at 8.42 v when measured together. I have flashed a bulb or two on the fresh batteries.

My research has shown that you can let them rest for 2 hours or more and they should be fine. My findings on the other hand show this is not the case with these AW 18500 cells. At this time they have been at rest at room temperature for over 9 hours and still show 8.41v.

I can't find any "destructive" data on this 5 cell bulb or the 6 cell bulb in the charts here on the site to show the max volts you can apply and I was hoping someone may have some data on them. Output, max voltage ect.

I know I can use the same bulb in a 6 cell model instead of the 5 cell model and not worry about it instaflashing, and that I can use the krypton bulbs as well but I am looking for a solution for using this 5 cell bulb. Any suggestions or info would be great.

 

[Outdoors Fanatic]

I put together a Mag 2C, using 2 aw 18500 protected 1500 mah , and a Maglite 5 cell Mag-numstar Xenon bulb.

The Continuous Run Time for this lite was 1 hour 36 min. on fresh batteries.

Not as bright as the ROP 8354 Low bulb, But no heat issues and and a longer run time than the 36 minutes that I got with ROP low using the same aw 18500 batteries.

After I have discharged these batteries and recharged them a few times with the DSD charger, the voltage on them seem to peak out at 8.42 v when measured together. I have flashed a bulb or two on the fresh batteries.

My research has shown that you can let them rest for 2 hours or more and they should be fine. My findings on the other hand show this is not the case with these AW 18500 cells. At this time they have been at rest at room temperature for over 9 hours and still show 8.41v.

I can't find any "destructive" data on this 5 cell bulb or the 6 cell bulb in the charts here on the site to show the max volts you can apply and I was hoping someone may have some data on them. Output, max voltage ect.

I know I can use the same bulb in a 6 cell model instead of the 5 cell model and not worry about it instaflashing, and that I can use the krypton bulbs as well but I am looking for a solution for using this 5 cell bulb. Any suggestions or info would be great.

Resting has no effect on Li-Ions... They are not NiMH. And you really should switch to the 6-cell Xenon Star.

Cheers.

 

[MSMAN]

well :thinking: , I was referencing a manual for a light similar to this setup that suggest the the batteries rest for two hours before using them in the flashlight.

I assumed that resting them had some effect on the battery. What would this step accomplish if resting has no effect on Li-Ions?:shrug:

Is there any data out there that support either of these 2 bulbs, the 5 or 6 cell Mag-numstar Xenon bulb.

 

[swampgator]

I've run a similiar set up, substituting the Mag bulb with both a KPR113 (4.8V) and a KPR 112 (6V). I've never instaflashed either, but I have waited a few hours before turning it on.

I've ever done any runtime or bulb life testing. However I did kill two 18650s by inadvertantly engaging the switch, the bulb being so low amperage that I guess they just drained the Li-Ions to empty.

 

[lctorana]

Resting has no effect on Li-Ions... They are not NiMH. And you really should switch to the 6-cell Xenon Star.

+1 on both points, from my observations.
I run the 6-cell LMSA601 Xenon in a 2C plastic host on my electronics workbench to look into dark chassis corners and read capacitor values and resistor colour codes etc. I can vouch that its extra efficiency is such that you don't lose too many lumens as against an overdriven 5-cell bulb, and the slight increase in runtime and the BIG increase in bulb life are worthwhile.

And CPF member Flashanator has demonstrated you don't lose much in whiteness either:
http://www.candlepowerforums.com/vb/showpost.php?p=2613519&postcount=5

Of course, if you still want a mild hotwire, there is always the krypton 5-cell bulb.

It's all fun.

 

[lctorana]

I can't find any "destructive" data on this 5 cell bulb or the 6 cell bulb in the charts here on the site to show the max volts you can apply and I was hoping someone may have some data on them. Output, max voltage ect.

Good question, you've reminded me about this, because someone HAS gone to exactly this trouble.

And I promised to add the data into my charts.

Who was it? I'm sure you'll read this.

Edit: Found it. It was Drewfus2001. He hasn't tested these bulbs yet - anyone in USA like to send him some?

 

[MSMAN]

Well I tried the 6 cell Mag-numstar Xenon with the aw 18500 protected cells. Continuous run time was 1 hour 40 minutes.

The Flashlight became warm to the touch. Also the last 15 min or so it was no brighter than the stock 2 c with alkaline and stock bulb.

 

[Howecollc]

Well I tried the 6 cell Mag-numstar Xenon with the aw 18500 protected cells. Continuous run time was 1 hour 40 minutes.

The Flashlight became warm to the touch. Also the last 15 min or so it was no brighter than the stock 2 c with alkaline and stock bulb.

How did the output of the 6 cell compared to that of the overdriven 5 cell?