As a real estate agent, I often find myself in a home without power and a flashlight in my hand. I have been pretty happy with my S2+ but wish I had more power. I’m looking to build from scratch a flashlight that can accomplish the following:
Run at a bonfide 4,000 OTF lumens for 30 mins without dropping below 3,500 lumens.
Below 5000k tint
Nice floody beam
Not terribly concerned about price as it’ll just be a tax write off (but I don’t want to buy a stock light). Not terribly concerned about size/weight as it’ll live in the door pocket.
We have so many talented builders on this amazing forum and I’m looking forward to your advice. Can’t wait to hear your suggestions, or even better, your full build lists!
I do not believe that is achievable in any form of EDC. Possibly in a monster light, with a super large heat transfer area and many batteries, but not for 30 minutes. Others may feel differently.
4,000 lumens indoors just sounds painful…. I would think an SRK or M6 would suit you. Parallel batteries would help with half of the runtime aspect, heat management is a different issue. 30 minutes is a long time.
The 4,000 lumens would be reserved for exterior lighting. Keep in mind, these properties are pitch black inside and I’m trying my best to illuminate the entire room to give my client the best experience.
EDC is probably the wrong choice of words. It would be carried with me on a daily basis in the door pocket of my car. Size is not a concern.
First off, battery power needed for 30min runtime min.
These figures do not allow for any losses!!! However I have aimed for 4444lm when 4000lm was asked for.
XHP70 - N4 bin = 1481lm at 1.75A (5.73v), 3 parallel would be 4444lm at 5.25A being 30W.
2s cells gives the volts, 5.25A for 30 min will require about 15AH at least to allow for minimum voltage drop over the time required.
What cells you use and their arrangement are up to you, depends on the host.
As you are not after any throw, other than to the back fence, I would avoid having any hot spot at all, nothing worse indoors especially when the walls are blank, mule maybe ? or a diffusion filter that you can remove for outdoor use.
All you have to do now is make/find a host that can handle the heat from 30w of leds for 30 min.
Actually it will be more useful to have 4 sources of 1,000lm each than having a single one of 4,000. Also, if you’re going to illuminate properties with no other lighting at all, I think even a single XM-L will be enough.
How about RMM’s new mega-M6 mod that should be up for order in 2-3 weeks.
It’s a 4x18650 Supfire M6 modded with 12 emitters. Max output is 12,000 lumens, though you won’t be able to run anywhere close to that for sustained periods.
I think you should look at all three (and maybe talks to vin, to see what you can “start” with. to some degree you have an almost impossble spec so start with what does exist, and then you have time to be chuck yeager and push the envelope.
