2C cell to 18650 adapter?

HeyGuysWatchThis

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Does anyone make such a thing? I can probably rig something up on my own, but I'd be interested in looking at a pre-made product.
 
I couldn't find any so I used gray PVC, and whittled it down with a rasp-bit on my drill-press. Its not pretty but it works fine.

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Nice looking stuff, guys.

Kramer-What size/type of pvc pipe is that? Care to share any more pics? That's along the lines of what I was thinking. What do you mean, whittled it down? Inside or outside diameter?

Aurum-Those look sweet, but I am in the U.S.

To both of you-how do you make up the extra length? The 18650 is roughly an inch and a quarter shorter than 2 C cells.
 
I could try playing with some stuff, and see what I can come up with, if you want.

Shouldn't take too much. Hardest part would actually be getting the right size PVC. Should only need 2 aluminum plugs + 1 length of PVC.

I'll update you tomorrow or Saturday with my results.

Probably looking in the ballpark of $15-$20+shipping (especially if there's a potential demand for them)

~Brian
 
Nice looking stuff, guys.
Thanks. I can make one of these in about 40 minutes give/take.

Kramer-What size/type of pvc pipe is that? Care to share any more pics? That's along the lines of what I was thinking. What do you mean, whittled it down? Inside or outside diameter?

Its just gray PVC you can get it at any Ace, HD or Lowes. Go to your neighborhood park or schoolyard, its the gray sprinkler pipe sticking up out of the ground. The ID is perfect for unprotected 18650 cells. They just slide right in. The OD needs to be brought down to ~26mm to fit in the 2C mag body.

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Rasp bit on my drillpress
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To both of you-how do you make up the extra length? The 18650 is roughly an inch and a quarter shorter than 2 C cells.


2x18650 is a bit longer. (2x65mm versus 2x50mm). To adapt the 2C, just remove the tailcap spring and spare bulb. Fill the cap with about 1/2 inch of lye based oven cleaner or draino to dissolve the anodize inside the tailcap. Pour it out and rinse clean, to expose the bare metal to -B. It fits perfectly with flat top unprotected cells. I don't think this works with protected 18650 cells.
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So I think I will end up doing something along the lines of Kramer's solution, except I think I want to add circuitry to give regulation and protection for the 18650s, since they are bare cells pulled from laptop packs. Is it possible to get something which will do both, or will I need to do one circuit for the protection and one for the regulation/modes? I would like to end up with H/M/L. I'm not exactly sure of the LED in the light, but I believe it is either an XR-E or an XP-E. FYI, the light in question is the Life+Gear 2C that I got from Target. You can see a pic in this post. There was another post further on in that thread that made me think of doing this project.
 
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So, Kramer, I found the PVC pipe you were talking about--looks great, and you can't beat 50 cents :). Anyway, I think this project is growing beyond the original thread, so I'm going to make a new one for the electrical parts of the project.
 

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