Overdriving 6Cell Mag-Xenon?

[kramer5150]

Quick question... Can a 6-cell Mag-Xenon bulb be overdriven by 7xNimh AA cells?... without Can it handle the extra ~1.2-1.6V?

thanks!!

 

[jugg2]

Actually depending on the voltage rating of the bulb, you may be underdriving it. 6 alkalines= 9V The bulb may have been slightly overdriven in the first place though. I'm sure it will be fine, put it in there and see how it does! At worst it will be underdriven and yellow :green:

 

[kramer5150]

OK thanks... thats what I was thinking. I'm starting with a 6cell pack and will up that to a 7 (and maybe even 8) when I get some more $$$ :twothumbs

 

[jugg2]

No problem!

 

[Drewfus2101]

I tested a Magnum Star Xenon 4 Cell bulb rated at 6V up to 7.4V at a slow ramp before it blew.

NiMH cells peak around 1.3V fully charged, so 7 of them would be 9.1V. Thats not even driving it hard. You would probably be better off to get the 4 cell bulb and drive it at 7V that this.

Maybe my charts will help you out some when it comes to drop in bulbs:
http://www.candlepowerforums.com/vb/showthread.php?t=184874

 

[lctorana]

If you want to overdrive a 7.2V bulb, there is also the Pelican #3853L, 11W, rated at 290 lumens before overdrive.

And the #3853H, rated at 24W / 600 lumens before overdrive.

For the record, the 6-cell Mag Xenon is 7.6V, 0.77A, and Maglite rates it at 233.5 lumens at an unstated level of overdrive (perhaps 9.0v).

 

[kramer5150]

Wow... you guys really know this stuff!! THANKS!!

I have a 4Cell Xenon bulb that I'll try first off the 6 cells.

 

[lctorana]

Guaranteed

 

[kramer5150]

Guaranteed

LOL!! Yup. hehehe... I had to try

The 6 cell bulb is running just fine though.... off 6 cells as expected. My 6AA pack started at 8.5V. After ~15 minutes it has settled a bit at 7.6V

Thanks for all your help gents. I'm gearing up for a 6AA ROP mod.

 

[ZMZ67]

I have been using a 5-cell Mag-Xenon bulb in my 3X123 converted 2C Mag.Don't use that light constantly but the bulb has held up fine so far.I am also using a 3-cell Mag-Xenon in a 4AA(alkalines) light.No problems there either but I just started using that combo so it may be too soon to tell.

 

[bfg9000]

The 6-cell Mag Krypton bulb works fine in direct drive from 8 AA NiMH cells. The 6-Cell Xenon Magnumstar works with 8 cells only if rested overnight after charging, but the lifespan is dismal (figure on changing the bulb every few charges).

The 5-cell Xenon Magnumstar seems to be a great choice for an X-LOLA type lamp for all the 2S-Lithium-ion and 6-cell NiMH ROPs out there.

 

[kramer5150]

I'm going to try the 5 cell Mag-Xenon bulb this weekend, on the 6AA pack. My 6AA pack peaks at 8.5V.... we'll see if the magic dragon rears his ugly head.

:thumbsup::thumbsup::thumbsup:

 

[Raoul_Duke]

If its of any use I use 6 cell mag bulbs on two RCR 123's for a small long running light in an old everready torch my grandmother used to use.

 

[Illum]

6D mag + 7 C cells....the results weren't pretty. despite many members having successfully overdriven their mag-num lamps....I have yet to succeed.
5 cell lamp
6 cell lamp (2 tests) first one died instantly in stunning white light, second one died a few seconds into the run:candle:

 

[EssLight]

I'm going to try the 5 cell Mag-Xenon bulb this weekend, on the 6AA pack. My 6AA pack peaks at 8.5V.... we'll see if the magic dragon rears his ugly head.

I run a 5 cell Xenon bulb on 6AA NiMH with no problems, although I do let the batteries rest until down to 8.4 volts before powering up the bulb. So I don't know if 8.5 V would flash it or not.

EssLight