Will this Lithium 2D Mag Mod work + which bulb?

[cfromc]

Hi all,

I'm thinking about building a high output Mag and am wondering if this combination will work:

2D
6AA to 2D series adapter
6 lithium AA 2900mAh batteries (about 1.8-1.9 unloaded volts)
Aluminum Reflector, probably LOP or LS
Glass window (UCL or Borofloat)

Will this work and which bulb should I use?

I'd like to do this on a brand-new 2D and not do the switch or tailcap mod if possible. It would be used only for short periods of time, probably less than 5 minutes at a crack. Would the WA1274 or PE3854 bulbs work? (if not, which ones?) Looking for 20+ minutes of run-time and ultra-bright.

 

[molite]

uh Yes, but...
Why would you run Lithium primaries in an ROP?
They cannot be recharged, very expensive to run.
You need to get 6aa Nimh recharables from here or similar:
http://www.cheapbatterypacks.com/main.asp?sid=720644&pgid=loosecells&chem=NIMH
Then you would be cooking with the "PE3854 hi"

Also all of you questions and more about "mag mods", bulbs etc are in the sticky at the top of the inacandescent.
Here:http://www.candlepowerforums.com/vb/showthread.php?t=140021

 

[cfromc]

I've been reading all the ROP threads but they mainly (only) deal with the rechargeables. I don't use any one particular light very often so in the past, I've picked up a light when I need to use it and it is dead or nearly dead. That is why I sold my Surefire 9N. I'd much rather deal with lithiums and know that I will get light when I need light. I'd be very surprised if I went through more than one set of 6AAs in a year, especially after the wow factor wears off. I was looking at the 1185 bulb which is rated at 9.6V. The AAs are rated at 1.5V but I think they are closer to 1.6V when loaded which would put them right at 9.6V but wouldn't the bulb start to be under-driven quickly, or would it be fine?

 

[cmaylodm]

How about 3x18650 or 18500 Li-Ion rechargeables with an 1185 bulb? That way you get the best of both worlds, rechargeable and low self discharge.

 

[molite]

Cfromc,
The 1185 is rated at 9.6v but this bulb is meant to be over driven.
It can handle about 12.5v.
In your set up it would be a little yellow, but I'm sure it would work.
6x1.5=9v or you say the fresh batts are 1.8v? =10.8v in a 6x setup.
So a 7volt+/- bulb would be really bright in your set up.

So maybe one of these:
Super Bulbs
SuperStinger6V-1.70A(2 Li-Ions >850mAh)
MagCharger 6V- 1.80A(2 Li-Ions >900mAh)
CL 1499 7.20V - 1.84A (2 Li-Ions >950mAh/3 x 123 primary)
Ultra Stinger6V -1.90A(2 Li-Ions >950mAh)
PE3854 6-7.2V- 1.90A (2 Li-Ions >1000mAh-ROP low)
CL 1057 6.0 V - 2.00A (2 Li-Ions >1000mAh)
WA 1274 7.2V - 2.77A (2 Li-Ions >1400mAh/7 NiMH, FM2.5C)
FM Axial 7.2 V - 3.30A (2x3 Li-Ions 1400mAh/7NiMH, FM2.5D)
OS 64250 6.0V- 3.33A (2 Li-Ions >1700mAh/6x2.3Ah NiMH)
WA 1111 6.0V - 3.35A (2 Li-Ions >1700mAh/6x2.3Ah NiMH)
WA 1160 5.0V - 3.45A (5x3.5Ah ump NiMH, Magcharger upgrade)
PE3854 6-7.2V- 4.3/4.15A (2 Li-Ions >2100mAh/6 NiMH-ROP high, KevinL)

Now these bulbs below are nice but would be undriven in your setup:
Super Bulbs
WA1306 9.60V - 1.10A (3 Li-Ions >550 mAh, FM700L)
CL 809: 10.5 V - 1.20A (3 Li-Ions >600 mAh/9 NiMH-1185 LOLA)
WA1331 9.60V - 1.93A (3 Li-Ions >1000mAh/9 NiMH-1185 MOLA, FM700L)
WA1166 11.6V - 1.97A (3 Li-Ions >1000mAh, FM700L)
WA1185 9.60V - 3.15/3.41A (3 Li-Ions >1600mAh/9 NiMH/andrewwynn)

 

[cfromc]

I was looking at the 7.2V bulbs but I don't want to instaflash. I guess the only way to find out is to throw one in and see what happens. Probably the 1274 or the 3854. BTW, I went to Target at lunch and picked up a nice new 2D host for $11.82+tax. I already have the lithium AAs and a UCL. Now I just need the 6AA to D adapter, reflector and bulb. Half way there.

 

[Sway]

AA Lithium Primary cells do not like to be discharge at high rates. I tried some awhile back and found when use in the range of 1.2 to 1.8 amps they heat up very quickly, the voltage drops and capacity suffers.

Yep you can use them but they are not the best choice IMHO

If you need something that will be ready to use after setting around a few months look into the Sanyo Eneloop AA's or rechargeable Li-Ion cells, both will supply more current than AA Lithium Primarys and hold their voltage better under a load.

Hope this helps

Later
Kelly

 

[cfromc]

OK, maybe Li-ion rechargeable, but, if I use 18650s I can only fit 2 into a 2D, right? They would be 10mm too long so I can modify the spring and fit them in. I could just use tubing so they fit and don't rattle. I would be pushing 7.2v-7.4V which should be good for the PE3854. I found some at 2200mAh so my guess is that they would run for 30 minutes or so.

 

[molite]

yup, thats the way to go.
No 6x battery holder.
$4 dsd charger from dealextreme

 

[bridgman]

In a new 2D Mag without switch or tailcap mods I found the WA1111 seemed to work a bit better than the 3854 (ROP) high, maybe because of the lower current draw. Haven't really done a serious A/B test though.

You can get potted (ie like a normal Maglite bulb) WA1111's from Light-Edge.

http://www.light-edge.com/products.asp?section=Super Bulbs&cat=40

 

[cfromc]

The potted WA1111s are not in stock. Considering the price of the bulbs vs. say a Surefire lamp, I could actually experiment a little and get the 3854 now and the 1111 later.

 

[cutlerylover]

The potted WA1111s are not in stock.

I hear ya, neither are potted 1185's...which are getting hard to find for some reason...:hairpull: Myabe I am just not looking in the right places?

 

[molite]

There is nothing wrong with the Pelican 3854 Hi bulb. (ROP)
It satisfies while you wait for the WA's