Best 2C 18650 set up?

Swagg · Apr 20, 2008

Ok flashaholics, I've decided that I want to mod a mag 2C and I need some advice. I want to purchase the 2C battery adapter and ring kit I saw here and also the high temp metal socket with high medium and low capabilities and run that with two 18650 Lions. So here is what I need some clarity on:
1. What are the best 18650's? I read that there are some you can and cannot stack, I just want protected cells that I can stack for the setup, and what's the best/easiest charger for the job?

2. Should I do the Osram bulb with this or is there something better/more appropriate for this setup?

Thanks guys for all your help.

Lunal_Tic · Apr 20, 2008

This thread might give you some ideas: Looking for a non ROP bulb solution for 2x18650s.

Good luck,
-LT

2xTrinity · Apr 20, 2008

Probably the WA1111 if you're using BiPin, and 18650.

Since you sound like you want to go with the multilevel soft starter, IMO you should go with something more powerful -- I'd suggest 2xAW C Cells, and the Phiips 5761, which will be about double the 1111 for output. You won't need the ring/adapter kit if you go that way, either (the AW soft starter is already smaller, so it should fit the extra length of the C cells with no modification)

Swagg · Apr 20, 2008

where is the best place to pick up those AW cells? Also is there any brands to stay away from?

2xTrinity · Apr 20, 2008

AW is the only brand I'd recommend for C Cells. His 18650 cells are also among the best available. He also sells the multilevel soft starter you were interested in.

If you're going to by both the soft starter and the C-Cells, I'd reccomend ordering from him on CPF directly. Alternatively, you can buy his batteries from Lighthound.com

Lunal_Tic · Apr 20, 2008

From the other thread mentioned above they apparently have had problems with the [email protected] tripping the protection circuit in AW C cells. Other modifications were needed to get it to work.

jimjones3630 said:
5761 pulls about 5.5A which would trip AW's protection circuit in 18650's
Non protected 18650's do very well has been my experience.

An overview:

5761 7.2Vbat.~854 torch lumens (1331 bulb lumens)1185 10.8Vbat.~772torch lumens (1194 bulb lumens)
5761 History And Modified Lights:

https://www.candlepowerforums.com/threads/127925fs BobG does beam shots against 1185
https://www.candlepowerforums.com/threads/145224 Old history and the challenge to develop the model
https://www.candlepowerforums.com/threads/113100&page=2 From post #100 onward the 1185 comparison and extensive 5761 discussion to include this model
https://www.candlepowerforums.com/threads/170972 NTC applications and sources

The problem arose with protection circuits even in C Li cells tripping with the 5761 5.5A draw.

In response to that several solutions arose. Northern Lights developed one solution the NTC.

Mount the NTC in the tail cap. Isolate it from the heat of the head as temperature state is critical to the resitance state. Use my tail cap modification:

http://candlepowerforums.com/vb/showthread.php?t=143345

follow the two links.
In this tail cap connecting device divide the circuit to upper and lower and put the NTC on the outside between the battery and ground. Cover the NTC and tubing with shrink wrap. You can keep a spare bulb in the center.
From post #133 on discusses some more about NTCs:
http://candlepowerforums.com/vb/show...73#post2119573
so does this link:
http://www.candlepowerforums.com/vb/...d.php?t=170972

-LT

2xTrinity · Apr 20, 2008

Lunal_Tic said:
From the other thread mentioned above they apparently have had problems with the [email protected] tripping the protection circuit in AW C cells. Other modifications were needed to get it to work.
-LT

From Original poster:

I want to purchase ... the high temp metal socket with high medium and low capabilities

That circuit acts a soft starter. If he buys the AW multilevel switch, the 5761 will work with AW C Cells.

Lunal_Tic · Apr 20, 2008

2xTrinity said:
That circuit acts a soft starter. If he buys the AW multilevel switch, the 5761 will work with AW C Cells.

Are you running this setup successfully? Could you point me to a thread where it is discussed because I'd also like to look into it.

I recently swapped over from the 2x18650s to C cells and the AW switch but am currently running the WA1111 that was recommended in the other post. I'd be particularly interested in runtimes and bulb life. Also is the bulb diameter the same as the WA1111 or close so I can use it in a FM deep 2" reflector?

TIA,
-LT

2xTrinity · Apr 20, 2008

Lunal_Tic said:
Are you running this setup successfully? Could you point me to a thread where it is discussed because I'd also like to look into it.

I recently swapped over from the 2x18650s to C cells and the AW switch but am currently running the WA1111 that was recommended in the other post. I'd be particularly interested in runtimes and bulb life. Also is the bulb diameter the same as the WA1111 or close so I can use it in a FM deep 2" reflector?

TIA,
-LT

http://candlepowerforums.com/vb/showpost.php?p=2048463&postcount=55 -- Description of 2C Mag 5761, by AW himself.

Lunal_Tic · Apr 20, 2008

2xTrinity said:
http://candlepowerforums.com/vb/showpost.php?p=2048463&postcount=55 -- Description of 2C Mag 5761, by AW himself.

Excellent, thank you. As for the length of AW cells in a 2C Mag I'd still recommend either the extended tailcap or extender ring. The stock tailcap binds up and is hard to put on.

In the pic below the AW switch and 2 AW C cells are right at the body threads. The right hand pic is standard cells in a stock Mag. They're about 5mm off the threads so it's much easier to put the tailcap on and there's not as much pressure on the cells. I've used the FM stainless tail cap and Download ring extender with good success.

-LT

edit: Forgot to mention that with the FM tailcap I can also carry a spare bulb just like in the stock Mag.

Lunal_Tic · Apr 20, 2008

I just bounced a few PMs off of Northern Lights about the 5761 and he said it would be OK to post the links he provided as "background information".

Thanks for your input NL :thumbsup:

Also got a message from AW saying the runtime on C cells with the 5761 should be about 35-40min on high.

-LT

Northern Lights said:
I use the 5761s. My best is this one which burns at 7.3 Vbulb!
FS: NEW 5761 Emoli 3C Mag NTC protected
I put charging jacks in my 2C AW cell that is why it has the spacer, the protected cells do charge in series and stay balalnced because of the protection:
http://img240.imageshack.us/img240/5452/3c644301dn7.jpg

http://img511.imageshack.us/img511/513/jack3mw6.jpg

http://img90.imageshack.us/img90/9156/8561xk0.jpg

my first 5761 2C using 18650s, I always use ceramic blanket insulation too.
http://img67.imageshack.us/img67/8320/m11leex7dz5.jpg

This is how I mod tail caps along with NTC and fuses, there are threads on all these mods:
http://img522.imageshack.us/img522/73/springreplacementmz8xq7.jpg
http://img260.imageshack.us/img260/2168/tailntcfusepv5.jpg
http://img337.imageshack.us/img337/2347/ntcfusetailta2.jpg
http://img260.imageshack.us/img260/2168/tailntcfusepv5.jpg

AW drive and jack assembly in an A123 light,
http://img211.imageshack.us/img211/4624/4c64430ux5.jpg

another AW 5761
http://img407.imageshack.us/img407/2776/mc61lejx1.jpg

links
1336 LUMENS, 2C-cell with Charging Jack.
2C Mag Tail Cap mod for AW's "C" cells
2,272 foot throw from my MagCharger!
NTC SOFT START 5761 IN 2CM@G AKA M@G61
Brightest Simple Mag Charger Mod, brighter than the 1160
A Fuse Saved My Hot Wire! (PICTURE!)
Modded 2C M@g, (2cM61), 1331 Torch-Lumens

He who started it all:
Phillips 5761 WW Shots - First Attempt

If any links look dead, take you to the index, cpf changed once. So if you use the link in the search feature you may find the new address.
You also can look up my member info and click on my posts to find more on the 5761.

I use smooth reflectors and frost the lower 2/3 of the bulb as the upper casts no shadows and therefore I do not cut any lumens from that. I hear the deep does not need the frosting.
look at the frosting:
http://img135.imageshack.us/img135/5686/pr2bipinhw2.jpg
(I made the sockets)

Outdoors Fanatic · Apr 24, 2008

Leef Body + SureFire Millenium Turbohead and tailcaps.

Best 2C 18650 set up?

Swagg

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Lunal_Tic

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2xTrinity

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Swagg

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