I don't see why Akoray doesn't just sell the driver from the 3-mode programmable mounted on a 17mm board. I bet people would pay $18 just for the driver without a flashlight.

Can you tell if the 1-mode programmable is using PWM?

Sorry cant tell , if it is PWM , I cant see it . 

Actually , I just compared it to a light that uses PWM on low and Med with DD on high .. And the freq , when shinning the light onto a running fan , is the same as the light running DD 

An easy way to spot PWM is to use a digital camera - the screens on the cameras I've been able to get my hands on to test strobe like crazy even when my eyes can't see it.

On high its just a solid line ...

And on low 

Looks like deff pulses .... 

I got mine yesterday. Looks nice. I has only one programmable mode like old4570's one. I think it's quite universal and versatile drop-in. Price is also good. I use it in my UniqueFire R5 and it fits great. Description is bit confusing (I expected 3 modes and 1 programmable) but I like it. Does it really throw 100m?

4/5 because of bad discription.

Thanks for the review and this website!

Went for another walk , to a flood basin near bye . Lots of flying foxes [ fruit bats ] . 

Took my Ultrafire A20 , Solarforce L2i  - L2 with variable drop in , Uniquefire HS-802 MC-E , and my Maratac AA ..

But yeah , 100 Meters no worries ..

I installed a 0~100% P2 module in an Ultrafire 502B. 

I have been testing it on low (moonlight) mode and as of 10:30am this morning, it has been running for 17 days straight on the same protected Trustfire 18650, 2400mAh cell. 

Anyone care to guess how long this will go.

Mine took , 0.01A which is as low as my MM will measure ....

So that would be , like , 240 Hours , and then some , since I cant get a true measurement ..  17 Days straight , got to love that . 

Id love to see a ramping Buck Boost driver , or even just a Boost driver that ramps ...   

17 days is 408 hours.

Have you checked the voltage remaining in the battery , to see how many hours you get as the voltage drops ?

I was referring to my mA measurement when quoting 240 + Hours ... Anyhow , very impressive !   

I don't have a light meter so I can't give exact lumens but it is dim but still bright enough to allow you to walk a path in the woods at night.

When this test is done, I'll try it in a 502D with 2x18650s.  Can't imagine the time that will run.

BTW, I temporarily shut it off tonight to check battery voltage.  It's at 3.5v still which is incredible!

P60man, you should get another flashlight, because you will live shorter than this battery :D. As for 2*18650.... kids of your kids will finish this test :P.

How is the beam and tint?  Does it have plently spill or is it throwy?

Thanks, I've been trying to find one to put in my 6p so I can use rechargeables.  The warm one DX had appear to be no longer available (been waiting 6mos).

Those keychain LED lights are brighter than this module when it is in low mode.  This is lower than the ITP C8 in low mode and even dimmer than the Kingpower in low mode.  It seems to put out about as much light as a single lit candle and whispers a little bit of light out to about 3-4 meters, usable if your night eyes are intact.

We live out in the sticks and in low mode, this will keep me from stepping in a cow pie on the way to an outbuilding but that's about it. 

At one meter, the 0~100% module on low is on the right and an keychain LED light is on the left. 

Looks like it has a pretty good tint based on the pic.  Looks almost neutral.

I went ahead and ordered one, looks and sounds pretty decent for the price.

The pic is accurate in brightness and color with the exception that the module has a faint spill that doesn't show up, but that's fairly inconsequential.  You can get an idea of scale from the wall switch to the left.

In all, the 0~100% module seems solid and quite usable especially if you periodically need or want something with an extended run time.  I have a solar charging setup that I use to charge NiMH cells and sometimes my lithium cells.  I can't wait to see how long it will take to recharge the drained 18650.  Perhaps my grandchildren will have to post the results of that, as rzezniq pointed out.    

It's a good thing that I have several other flashlights that I can use while this 502B is tied up with the run time test.

According to some a Li-ion is considered empty @ 3.6v  , Ive run some down to as low as 2.75v before they gave out . 

But I try to stop around 3v ... And if current thinking is anything to go bye , they say discharging a Li-ion to far causes cell degradation . [ ? ] 

Oh well , there cheap enough , 

The module is still running and the cell is now at 3.44 volts.

In the last 72 hours of use, the cell dropped a mere .06 volt.

I have been testing these gray Trustfire cells for some time and have been very happy with them.  Cycling them to their limits, I have experienced no degradation.  The protection circuit consistently cuts off at 2.75 volts and these come off of the charger at a consistent 4.19 volts.

Protected cells are the only way to go, IMHO.

My grey Trustfires don't cut off on low voltage. They do cut off on over-current but not at any voltage I'm happy about letting them drop to. 3 weeks is impressive!

Don, is it your charger that is cutting off at peak voltage instead of the cells? Most decent chargers will do that.  My flashlights that take lithium cells seem to automatically shut off at appropriate low voltages and my rechargers cut off at 4-point-something-ish so the added protection circuit on the battery is technically a redundant safeguard I suppose.

The test module is still running with no apparent degradation. 

Let's see, how many days/weeks is that now?  Carry the two and divide by pi...

22 days and 10 hours

I'm bored with this test.  I think I'll DuraCoat some 502Bs or maybe some 504Bs.  Anyone have a favorite color?

Saffron

;)

My charger is set to cut off at 4.1V on high - but on discharge the cells don't cut off where they are supposed to at 2.75V. Without killing cells by discharging them to below 2V I can't really tell at what voltage they do cut off. It is certainly below 2.8V which is where they are supposed to. Trying to charge a cell that has been discharged below 2.5V is asking for a fire. The stuff that comes out of lithium cobalt cells when they burn is not good for you...

538 hours. How well dark adapted would your eyes have to be to use the light?

Can I vote for vermillion? Or chartreuse?

You mean yellow or red? No problem for me.

Sure, I still had to translate your choices to "male-ish" ;)

The 10~100% module is still running!  Either the angels are keeping it going or I have a magic 18650.

That's it!  Magic 18650 for sale!  Includes a matching set of angels!  (Not valid in Washington DC where angels are not allowed)

Regarding how bright this is, imagine the amount of light you would have if you lit a single candle on a birthday cake.  If you were in a cave, prison cell, or locked in the trunk of a car, this might be enough light to read by.  It is better than nothing...for a very very long time.

I thought about spinning off the lithium cell reference to another thread but the links here seem to be seriously fubar'd so I'll just add the info here.

Regarding low voltage cut-off,  It might also have something to do with the driver that you are using.  I recently ran a test of a 5 mode P60 drop-in on low that ran for exactly 71 hours before it shut off.  The gray 18650 at that point registered 3.25 volts.  I thought that it would have been in the mid 2's. [shrug]  I have never had a lithium cell catch fire but I once had a protected 16340 go Zzzzzzt while I was holding it and that sucker burned a nasty hole in my thumb.  I think the wire from the pcb that runs up the side of the battery shorted out somehow.  My wife was not amused when I quickly dropped the crackling demon onto her kitchen counter.  Zzzzzzt! Zzzzzzt!  I scraped it into a cup and tossed it into a snow bank.

I prefer not to use 16340s anymore unless I'm firing up the grill.   (just kidding)

I thought vermillion was the winnings in the German lottery and chartreuse was the last car on a choo-choo train.  We never had colors like those when I was growing up. ;-)

I always reckoned vermillion was the colour of arterial blood (I work in a hospital) , and chartreuse was the colour people's faces went with severe sea-sickness.

To make one boom, try applying 12V at 15A from a car battery. Does the trick every time. Had a bunch of 4 year old CR123's that would no longer hold a charge. So decided to "charge" them.

P60Man my vote goes for bright RED.

That 10-100% module has really impressive runtime.

26+ days straight!

The run time test for the 0~100% module has ended with a total of 626.5 hours.  That's 26 days, 2 hours and 30 minutes.

At the very last, the light quickly dimmed to a level of "I'm still lit but I'm barely lit." 

The cell finished at 2.99 volts.  

YMMV

That's an impressive test. Thanks.

Additional information: If you are going to need the very low mode of this module for an extended period of time, this is great, but if you need to periodically cycle it on and off at that low level, you will lose functionality after 23-24 days.  Still impressive but worth knowing.

I ran into this issue during an earlier test of this module.  If your cell is down around 3.4-3.5V, when you turn it on, the module will loop the cycle from zero to one hundred percent over and over again.  It will not remember your chosen level when you turn it off.  Turning it back on again at that voltage merely starts the cycle over again.  The single mode and five mode modules will continue to function flawlessly at those voltages. 

      Well done ...  One needs such a drop in , in ones collection . 

Just got mine.  Seems pretty decent.  The interface will take some getting used to, i.e. avoiding the programming. 

Question, has any one tried this in a stock 6p?  If so, did yours fit better without the outer spring?  This is my first drop in, but mine seemed to stick out too far with it.

Sure is nice to be able to use rechargeables.