I would like a C or D version of the Sipik sk68, that would be neat.
I would like to see someone come up with a Pak-lite led device to hook onto a D-battery, for longgggggggg term black out use as a tiny lantern.
Maglite really should introduce 1D and 1C models these days.
the problem being 1d or 1c either needs three smaller primaries ( aa or aaa) in series or one lithium 3.7v cell to really give decent output.
I take it by “decent” you mean maximum. Not sure why everyone is so obsessed with maximum output from their LED. Run time is important too.
that was the idea
that is basically what they give us at work. they are absolute junk. but on the other hand, i literally set one on fire about once a week on average probably haha.
the idea was something more durable, with higher output than a junk plastic incan. something i could keep near by to get a better look at my welds when im done
edit: but i dont get the cool reflector at work that those ones have :~
edit: i actually like the sounds of a d cell sk68… you could use Ds, or a 3aa parallel adapter with 14500s… or use a sleeve for a 25500 or they could make an adapter for 18350/16340…. you listening china?
I agree about runtime, but you’d get more runtime from 3-4 eneloops in series than 1 d cell, dont forget the circuit will have to boost to 3+ volts and it wont give much current to the emitter.
I just dont see it as a commercially viable solution myself.
A better solution all round would be a light that has a very good quality 3aa series battery carrier or the option of using a 26650 cell. If that was done, it would be a winner
well, they hand out d cells like candy at work. no other cells available for free
6d maglite then? J)
or tk70 0:)
Not if you used an 8000-10000mAh D cell.
that still wouldn’t work for the op, I highly doubt his work doles out 10000mah tenergies, or a charger that doesn’t take days to charge them.
And how many consumers will splurge $100 or so just on a few cells and a charger to run a torch? Eneloops are at least, pretty mainstream now, and, as I pointed out, no-one has elected to build such a light, there must be a reason, I suggest that reason is output vs size as I’ve not seen a single primary cell driver that does over 1a to the emitter.
Just because nobody has marketed one yet does not mean it wouldn’t be a success with good marketing behind it. Most companies tend to copy the latest trends and dont bring much new to the party.
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Found this: !http://ecx.images-amazon.com/images/I/31lzpt76HiL._SS270_.jpg! http://www.builddiy.com/CRAFTSMAN-2D-CELL-LED-FLASHLIGHT/dp/B008L2JXKW
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I have one of these . Blueish , pencil beam with weak spill . I sputtered the reflector in an attempt to get more spill out of it . It didn't help much . Then I DC-Fixed the lens and now it has a tolerable beam profile .
It is a heavy , sturdily built light but I can't recommend it .
Depends on what you mean by ‘decent’. Most people would consider the 280 lumens from a Zebralight SC52 to be MORE than decent. And given the fact that both the capacity and maximum amperage of a D FAR exceeds that of a AA, you could get more than 280 lumens with more runtime from 1xD. Realistically, you could probably get 500 lumens for at least an hour from a 1xD light. Not too bad.
On the other hand, a 1xD light would probably be a fairly unruly affair. Diameter-wise, it certainly won’t fit as well in your hand as a light that uses smaller diameter batteries. And without the length to get a good balance (like, say, a full-sized Mag), it will be just plain tiring to carry. This would especially be true with something like a 1xD Mag, which would be quite head-heavy.
Batteries are not made for high current.
If you pull 2A from a D cell it lasts 2 hours until 0.8V are reached. Highly decreasing with more current.
So if you want to drive a LED with 1.5A and the LED has a forward voltage of 3.xV
1.5A*3V=4.5W ……would mean if you have batterie voltage of 1V you will need 4.5A…
So the only way would be to go with rechargeable nimh…and then you could easily just use 2 18650 which are not much bigger but better.
this light was not meant to be a heavy driven xml. just a moderately driven LED, under 100 lumens would have been sufficient.
it would have been attached to a swivel with a magnet attached to that to aim at the pieces i need to weld. d cell was what i wanted at the time because thats all they supplied us at the time. they now have aaa also.
gave up on a single d cell light. pretty much would need to have one custom made. i set about 1 flashlight on fire every week or so, and burn up 3 or so plastic lenses a week. just not feasible to spend money on a custom light to set on fire
Yeah I’m hoping for a long runtime 100 lumens or less high and a moonlight mode that runs for years 
Well, the nice thing about D batteries (at least if you go NiMH) is that you can draw large current for long periods of time with little voltage sag and almost cknstant discharge voltage. For instance, my Tenergy Centuras don’t even get warm when drawing a current of 4A in my ROP light (unless we are talking about the battery closest to the bulb, which gets heated by it). And 10000mAH HSD batteries will last even longer. Of course, the real problem with a high power 1xD light is that it will require some pretty hefty boost circuitry in order to run anything of significant output.
Lumintop SD10
I wonder how much it will cost.