These 2P 18650 D26 hosts (3.7V, 7000mAh) can power up (P60 type) Xenon (or LED) bulb even longer than 21700 (5000mAh) or 26650 (5800mAh)
5cell bulb probably would take the full brunt of those INR cells and instaflash, good call. I hate wasting perfectly fine stuff as well.
If it proves easy enough I'll bypass the tailcap spring with some copper wire. I'll be happy with the stock 178 bulb lumens (about 115 otf?) though because it's runtime I'm after.
How do you mod the switch for less resistance, BTW?
So not accounting for resistance, lost battery capacity, etc, how much runtime am I looking at here on the 25% brightness setting?
I'll estimate 14+ hours,
and most importantly, the guts of a Lightsaver Miser Tailcap installed, which allows me to run the light at 25% brightness.
I'm okay with the Surefire MN02. It runs 2.5hr at 25 lumens on two CR123A's. I think on fresh batteries it starts out at more like 40 lumens.
Chillinn, 15 minute intervals with blinky flashes to let you know said 15 minutes are about up
With the discontinuation of the MN02, the LumensFactory HO-E1R, with it's 0.8A draw, paired with a 16650, is a good alternative.
Hi Sir, may I ask why does it need to be in 15 minute intervals?
Do the tailcap guts overheat?
That HO1 0.8Amp bulb looks mighty fine. I may have to try that in an E2e someday.
I have no idea why they designed it that way, but I'm not a fan. I don't think it's due to heat concerns though. Hard to say what they were thinking to be honest. As a matter of fact, I've around dug the internet hard trying to get whatever kind of information on the Lightsaver Miser I can, and there really isn't much to be found. It is a mysterious little tailcap, that is for certain.
I probably would not be a fan as well, knowing that I would be underdriving the bulb. I would just opt for a lower amperage bulb and higher capacity cells.
BTW since this is a thread for long runtime incans, I am happy that my 3C Mag has landed in my country and is in customs jail.
I got myself a couple of 5000mAh 50E 21700 Samsung cells to pair with the Magnumstar 6 cell bulbs I bought earlier.
Any last minute tips for my project?
I got myself a couple of 5000mAh 50E 21700 Samsung cells to pair with the Magnumstar 6 cell bulbs I bought earlier.
Very interested to hear your real-life results when you get them together!
I like 4 cell mag bulbs with 2 LifePo4 solar lamp batteries. (18500)
Works great in 2C sized lights.
Tads bulbs are good.
Member Chillin' did a thread a couple years back about some bulbs used in the dash board of F-14 fighter jets called Lamptronix. Not really bright output type but pretty tough. They're 3 volt bipins with a ridiculous filament shadow. I bought several to see how tough they are and use them in my 3aaa lights. One lasted about 10 minutes being driven by 2 18650's. So for a bulb with a long lifespan those Lamptronix are hard to beat if you can find them anymore.
My incan long runtime champ is a 2D prototype made by Brinkmann for Snap On Tools with a high and a low switch using a PR4 krypton bulb. Runs at about 25% when the low switch is pressed.
Snap On said "nah" to the idea so only 6 were actually made. Don Keller shared one of them with me for my collection.
I probably would not be a fan as well, knowing that I would be underdriving the bulb
I have no idea why they designed it that way, but I'm not a fan. I don't think it's due to heat concerns though. Hard to say what they were thinking to be honest.
Very interested to hear your real-life results when you get them together!