They are very similar, but you can’t have both low voltage protection and the indicator led on the 2 cell version of this driver.
Narsil v1.2 has LVP, but no temperature support or indicator led support.
Narsil V1.4 does not have LVP, but does have temperature support and indicator led support.
Basically the indicator is a little fancier than the power indicator. It can be programmed to stay on when the rear switch is on or you can manually turn it off. When you do a battery check the main beam as well as indicator led blink at the same time.
With my light I only needed the power indicator so that I know when the rear switch is on and off. So I chose to have the LVP and no indicator led or temperature support. I can measure the temperature with my hand. Lol
Which is better between what? V1.2 and v1.4 or do you mean both of them compared to M?
1.2 and 1.4 are equally good, they just have different options. Narsil M is supposed to have the ability to let you assign pin 7 so you can choose between temperature sensors or lvp. I’m not an expert in Narsil and the M version was not ready yet when I ordered my drivers.
Is Lexel making you one? If so, I would ask him which version suits your needs.
This is true on any light (unless the indicator light was monitored by the LVP circuit), but I don’t think this is really an issue. I mainly use the sideswitch light to tell me if the rear switch is on or off. If I’m not using the light, I turn off the rear switch so there is zero drain.
Okay, due to high interest, I was able to get all the pics loaded up to Imgur. Holy cow, it took over an hour to do it. Maybe paying $400 a year to turn Photobucket back on is not such a bad deal. Lol
My complaint has to do with the folder structure. With Imgur, you can load a bunch of pics into a folder, but the folder has no thumbnail view. If I want to find a certain picture, I open the folder and then have to scroll down a super long page of full sized pics.
With Photobucket, they had thumbnails to easily find the picture I’m looking for.
I’m not sure, but I suspect that Imgur just dumps all your pictures into your account and lets you organize them in folders. You can delete a folder, but the images stay. IDK, it seems weird.
I finally decided to install my new xhp70.2 (P2-1D) cool white emitter. First I had to upgrade the bypass wire in my tail spring as the copper braid kept burning through.
I’m getting 17.3 amps once it stabilizes after 15 to 20 seconds. Pretty impressive using the Liitokala blue cells.
I apparently didn’t do a ceiling bounce measurement after adding the TA Fet driver. Using the stock driver with R100 added gave me 350 lumen in a ceiling bounce, so I know the new driver with old xhp70 would be well above that. This new 70.2 shocked me with a 740 lumen at turn on and about 700 lumen after it started to stabilize after 20 seconds or so. That’s double! If the stock driver with R100 is about 3800 lumen, I’m guessing I’m well over 7,000 lumen now.
The yellow corona is not too bad in this cool white tint. At least not at the higher brightness levels. I can probably get used to it. The 50.2 in 5700K that I tried out was definitely more yellow and I did not like it.