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.
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
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.
Only single D cell lights I’ve been able to find are the $2 or $3 Eveready flashlights. Says “25 lumen 60 hour runtime” on the package from home depot a few days ago but I really doubt they are 25 lumen. Main reason I bought it was just for power outages and just if I needed just enough light to get around, but brighter than moonlight modes.
I was thinking of this same topic and came across this thread. The Maratac version has been around for a year or so, surprised to see it not mentioned yet. The sort of form factor I would like in a 1D light also. Just not spending $50 on one . . .