so that’s exactly the voltage range of li ion batteries, normally i see driver can accept voltage range wider than that.
I ask this because i want to power the flashlight from more sources than just li ion batteries
Wont work well
why is that? If it’s a boost driver and it’s can produce constant current with input voltage anywhere from 3V to 4.35V, why can’t it do the same at 5V? (for example i want to use an usb powerbank to power it)
Because it checks voltage each time you put cells inside, and checks internal resistance while working.
I dont know usb powerbanks with 20A output current.
I know usb power bank can’t provide that much output, but is it ok if i only use lower modes? or do you mean that the driver check the voltage to make sure that it is within 3-4.35V, otherwise it wont light up?
I mean it knows that cells should discharge. I cant say exactly how many ui bugs you will meet with constant voltage input.
I you can find more suitable flashlight to power with usb.
I’m not going to power my flashlight with USB but I just wondering if the driver can do that.
You mean even a constant voltage within range, say 4V, would create UI bugs?
For sure.
Thanks, that’s good to know.
I thought the driver just use some input variable (voltages, resistance…) and some formulas to create constant current output, so any voltage within limit is ok because it just need to apply the voltage variable to the formulas. But it’s not as simple as that.
Another question, if i can create direct connection from charger to batteries (while they are still in the Meteor and still in parallel), so the driver also receive voltage from the charger, would there be any problem:
- if the flashlight is off
- if the flashlight is turned on
I think yes.
You turn on flashlight ecu when you put cells in. After this cells voltage can gecrease but not increase.
Is there any problem if I don’t turn on the flashlight? Is there any voltage limit for the driver (even when it is off)
It does not matter if your turn it on or not. Ecu recieves voltage after you put cells inside, and it will wonder if voltage will increase.
I dont know if there is input voltage limit. Dont think anyone tested it above 4.35v.
What is the max sustained lumens level for the XPL HI version?
Can i do a TA driver in my M43 with Narsil? also somehow still use the led’s in the switch?
Sorry if this has been talked about already, I’ve been out of the game awhile.
Possibly, but there’s so very little vertical space inside the driver bay of the M43 that making it work is like brain surgery.
Just ordered this light with Nichia 219. It is suppose to replace my TM06.
I’m very excited to get it ! Since I’ve looked at this light for a very long time. But had no reason to buy it. But now when my tm06 is acting weird, I have a reason, 
Cool Red! Now you can mail me the TM06 and I’ll dissect it. lol
Haha I could.
But it would be fun taking it apart myself and try to mod it somehow.
Not sure how though, and what to mod it with :person_facepalming:
What would you do with it? :laughing:
Nitecore likes to use a clear plastic insert in the head, it supports the driver and switch board and is problematic when it comes to modding. I’ve replaced the emitters in one of those and saw gains, perhaps a bump to the driver output… a serious mod to get a lot more output is quite a bit trickier. But still fun to attempt especially if you get a nice result. 
I guess, more specifically, if I had one that I was playing with I’d probably slice the domes off some Samsung LH351D’s and resistor mod the driver to see what kind of output and focus gains I could get. Better tint, more lumens, more throw… well, and the obvious larger wires, spring bypasses…
Curious what y’all think about this…
I modified my M43 long ago, it once did 12,000 lumens but I think is only making around 10,000 now with the emitters having taken a beating. Pretty sure I have XP-L HI’s in it and an FET driver. I happen to have recently acquired some of the new Samsung emitters, both in 5000K 80 CRI which is a U6 power bin and in 5000K 70 CRI at the W6 power bin. I put 4 of the new W6 binned Samsungs in my Emisar D4S and it is doing just over 7200 lumens. So, what if I swapped out the HI’s in my M43 for these new Samsungs? Wonder what it would do?
I mean, if I can get the M43 to get the same out-the-front lumens as the D4S is showing (from each emitter) then it should be, hypothetically, capable of 21,600 lumens, right?