Any IMR 'C' Cells that fit into a stock, un-bored Mag C?

[RichS]

As the title says, has anyone found any 'C' sized IMR cells that will fit into a Mag C without having to get the tube bored?

Thanks in advance!

-Rich

 

[Mjolnir]

Apparently these cells fit inside a C mag when you remove the paper wrapper, at least according to THIS post. These cells are actually 3000 mah and are listed as 26650s (although the length says 70 mm), so you may need to get an extender of some kind if a very low profile spring won't work.
Apparently the positive terminal is isolated from the side of the battery tube even when the paper is removed, so they should work without the paper.

 

[KiwiMark]

Apparently the positive terminal is isolated from the side of the battery tube even when the paper is removed, so they should work without the paper.

Ummm, what? When is the positive terminal ever NOT insulated from the side? What if you have 2 or more batteries? If the positive of the bottom battery is touching the negative of the next battery and both have their metal cases contacting the inside of the metal torch body then the bottom battery is being dead shorted! If you had 4 batteries then the one closest to the head would be fine, but the 3 below it would all be dead shorted.

I think that some sort of insulating wrap would be a good idea (remove cardboard and then use thin-walled heat shrink).

 

[R@ndom]

Doesn't the batteryspace one offer better capacity? Anyway the Mag tube is ano'd so no problems there.

 

[Mjolnir]

Ummm, what? When is the positive terminal ever NOT insulated from the side? What if you have 2 or more batteries? If the positive of the bottom battery is touching the negative of the next battery and both have their metal cases contacting the inside of the metal torch body then the bottom battery is being dead shorted! If you had 4 batteries then the one closest to the head would be fine, but the 3 below it would all be dead shorted.

I think that some sort of insulating wrap would be a good idea (remove cardboard and then use thin-walled heat shrink).

Don't ask me, I just paraphrased the post of someone else who claimed to have used the cells. I don't have a C mag or those cells, so I don't really know for sure what is under the paper. I wasn't really thinking about the cells in serial... I suppose if the tube wasn't anodized it would short the cell. However, the cell IS anodized, so it shouldn't be an issue.

 

[KiwiMark]

Anyway the Mag tube is ano'd so no problems there.

I am not so sure I would be happy to trust the ano to protect the cells from shorting. The bottom cell in a Mag tube is electrically connected to the tube on the negative end, if any other cells made an electrical connection then you have a short. I would not want the torch to be one scratch on the inside of the tube away from dead shorting one or more cells.

 

[leukos]

There is also this option: http://www.batteryspace.com/limnnirechargeable26650cell37v4000mah10arated148wh.aspx

 

[RichS]

There is also this option: http://www.batteryspace.com/limnnirechargeable26650cell37v4000mah10arated148wh.aspx

So these fit in an unbored new style Mag C (without removing the wrap)? Has anyone tried them? The added length isn't an issue for me since I'm already using an extender ring for the li-ons I'm running.

 

[Fulgeo]

So these fit in an unbored new style Mag C (without removing the wrap)? Has anyone tried them? The added length isn't an issue for me since I'm already using an extender ring for the li-ons I'm running.

I have 5 of those batteryspace cells and they do not fit in my newer style Mag C flashlights. Great cells thou otherwise.

 

[kramer5150]

I have 5 of those batteryspace cells and they do not fit in my newer style Mag C flashlights. Great cells thou otherwise.

Thanks for the feedback on these cells...
How thin is the magC wall after boring it out?
What charger do you use for these cells? Can any Lithium-Ion, 4.2V cut charging circuit work?

thanks!!

 

[Fulgeo]

Thanks for the feedback on these cells...
How thin is the magC wall after boring it out?
What charger do you use for these cells? Can any Lithium-Ion, 4.2V cut charging circuit work?

thanks!!

Not sure about the exact thickness after boring but I hear it is hefty enough to take the boring so you should be ok. You really want to leave the wrappers on these cells imo. I use a good hobby charger to charge mine but they list some inexpensive chargers on the site that sells the cells that can charge them just fine.

 

[^^Nova^^]

I don't know specifically on the batteryspace 26650 cells, but with AW 26500 (which I assume are the same diameter) you only need a couple of thou removed from the mag tube. I have a pewter 2C that Mac bored for me, still heaps of thickness left, nowhere near the diameter of the threads.

Cheers,
Nova

 

[Mjolnir]

According to my digital calipers, my batteryspace 26650s are approximately 26.2 mm.

 

[cernobila]

What is the maximum diameter of the red AW IMR "C" cells? I have a stock standard Mag 2xC light and the internal diameter is 26.22, would they fit?.....thanks.

 

[KiwiMark]

What is the maximum diameter of the red AW IMR "C" cells? I have a stock standard Mag 2xC light and the internal diameter is 26.22, would they fit?.....thanks.

That is about the outside diameter of the AW cells - it would be a very tight squeeze. It certainly would not take much honing out for the Mag 2C torch to be able to fit these cells.

I measure the AW cells at 26.22 - 26.23.

 

[^^Nova^^]

Will took some measurements a while back (post here) in this thread, a lot of other good info on those cells there too.

New style C mags seem to be about 1.035", with the IMR26500's being about 1.036". Sandpaper and a drill should be able to remove enough to make the batteries fit.

Cheers,
Nova