Popular bulbs current draw; SF & other brands, incl hotwires

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vortechs

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I was looking at another thread that discusses the limits of how much current Li-Ion cells can deliver and why you often need the larger sized Li-Ion cells (like the 17670, 18500, and 18650) to run a powerful incandescent lamp. It turns out that 16340 size Li-Ion cells are often not appropriate for incandescent lamps.

I realized that this thread, which gives a lot of information about the current requirements of various lamps, does not have any info to help a beginner learn about why it is important to know the current requirement of a lamp (to match it with appropriate batteries or to compute estimated runtime).

For the benefit of people who are new to incandescents bulbs and Li-Ion batteries, here is a link to a good thread about the limits of Li-Ion cells (especially protected 16340 size cells) for powering incandescent lamps: http://candlepowerforums.com/vb/showthread.php?t=115025
 
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vortechs

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Re: Help compile a list of Current Draw for popular globes

rikvee said:
Still looking for the current draw of the following globes:

- Wolf-Eyes 12V M100X - ?

should there be any others on this list?

I recently got a M100X bezel/bulb for my Wolf Eyes M90. I noticed that it is the only bulb still listed with a question mark on the first post. Here is the measurement.

Wolf Eyes 12V M100X = 1.28 Amps using 4 CR123 primary cells that aren't fresh (they measured between 3.023-3.028V).

It started at 1.30 Amps and slowly dropped to 1.28 Amps in 60 seconds.

Measured on a Fluke 77III multimeter using the 10A probe connection
 
hburner

hburner

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I just noticed that the Digilight 12v lamp is not on the list,


Digilight 227 lumen DRB-12VHP 1.28 amps on 4 Surefire 123s.
 
molite

molite

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I refer to this often, it is an awsome sticky!
Thanks for you effort rikvee!
If I or anyone else were to research the bulb lumens
and post here would you update the master list?
 
Paladin

Paladin

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The Blackhawk/Night-Ops "Falcata" 9 volt light is pulling 1.25 amps on the three supplied BH branded cells. NICE beam! Fits my large hands perfectly.

Paladin
 
B

B'hamFAL

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wolfeyes D36-13V

pulls 1.46 amps off a fresh charge in my m90-13v. Running the bulb off my bench power supply at 1.46 amps results in 10.7V across the bulb.
 
rikvee

rikvee

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molite said:
I refer to this often, it is an awsome sticky!
Thanks for you effort rikvee!
If I or anyone else were to research the bulb lumens
and post here would you update the master list?

Thanks, Molite, most of it was compiled in the fading days of my flashlight obsession :(

Then about 5 months ago a broken computer cured me! :laughing:

Since I was carrying most of that stuff around in my head,
I'm glad I got it out in time, before it left my brain again....:eek:

I certainly had a great time learning most of it on this forum,
'still love my Surefires and modded Mags! :)

Lumens measurement may be a bit of a can of worms;
there's the effect of reflectors and lenses, as well as the method used;
perhaps not as cut and dried as measuring current with a Digital Multi Meter.
 
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InfidelCastro

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The MN10 M3 LOLA draws 1.18A on 3 fresh Surefire CR123A's.
 
Glen C

Glen C

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Rikvee,

For the Wolf Eyes and Lumens Factory 3.7 volt lamps, measured after 30 seconds on a 2000mah Wolf Eyes cell with ten minutes use on it, the results were 2.08 amps on the new WE (short hyphen) 100 lumen lamp and 1.68 amps on the Lumens Factory HO-4 150 lumens lamp.
 
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petrev

petrev

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Hi

Update / Correction

The 64275 6C is running Annsmann 3500NiMh x6 (not 5 as in post 1 - typo)

and I just checked a fresh bulb with warm off the charger batteries

6.3A at 7.35V (measured)

This is higher than accepted std. safe values as stated before and will probably reduce bulb life - but - maybe interesting !

EDIT - Very Interesting - Blew on 3rd light - Ah Well - Let them rest longer for safety . . .

Accepted setting for Regulated Li-Ion is 7.0V
Still testing this ! ! !

Cheers Pete
 
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nightstalker101

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This is very usefull, how do you calculate C's (1C, 2C.. ect)
 
petrev

petrev

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petrev said:
Hi

Update / Correction

The 64275 6C is running Annsmann 3500NiMh x6 (not 5 as in post 1 - typo)

and I just checked a fresh bulb with warm off the charger batteries

6.3A at 7.35V (measured)

This is higher than accepted std. safe values as stated before and will probably reduce bulb life - but - maybe interesting !

EDIT - Very Interesting - Blew on 3rd light - Ah Well - Let them rest longer for safety . . .

Accepted setting for Regulated Li-Ion is 7.0V
Still testing this ! ! !

Cheers Pete


UPDATE AGAIN - CAUTION

Another bulb blew instantly on cold batteries this morning so must have had a good bulb before that lasted ages through multiple charges with no problems ! ! !

OR

Could be the standard switch resistance is now too low as I recently Pro-Golded it for the IRC bulbs ? ? That could have been what was protecting them before . . .

Cheers Pete

ps.

C relates to Capacity of Battery and Current draw

eg. 1300mAh Capacity cell @ 1.3A draw is 1C and @ 2.6A is 2C etc.
 
Last edited:
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nightstalker101

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Thanks for all of this great info.
 
LuxLuthor

LuxLuthor

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I'm glad RickyT just linked this thread. Very handy, and now in my Firefox Scrapbook.
 
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vortechs

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Re: Help compile a list of Current Draw for popular bulbs

I was reading KevinL's comments in post #37 of this thread.
KevinL said:
...1319/1183 are good for 4 x NiMH, possibly 4 high current NiMH AAs in a bored and cutdown 1D Mag. This has already been done.
Does anyone have measurements on how much current the 1319/1183 bulbs draw from 4 x NiMH cells? I didn't see that info in the first post.
 
mdocod

mdocod

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Does anyone have measurements on how much current the 1319/1183 bulbs draw from 4 x NiMH cells?

according to the hotrater...

the [email protected] runs at 3.84A.
the [email protected] runs at 1.91A.

keep in mind that calculated, not measured, depends on the cells and how much resistance in the configuration... I wonder where we can get some potted 1183s, lol. looks like a great bulb for quick and easy mods.
 

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