XM-L2 would be a little lower than the XP-L HD. Same/similar forward voltage, and therefore same current, but the XPL HD is, I believe, available in high flux bins than the XM-L2
The breathing effect is costly in terms of power regardless of whether it’s on a button or front-facing LEDs. However, Anduril does not have a breathing mode. The closest it has is a blinking mode, and that doesn’t really cost any extra power.
In terms of implementation, it is done by enabling PWM on the indicator LED pin, and then cycling a slow triangle wave (linear zig-zag) on the PWM level. It’s really easy to do, but it requires keeping the MCU awake in order to generate a PWM signal. So in that mode, about 95% to 99% of the total power goes toward running the MCU, and only 1% to 5% for powering the LED. It’s very inefficient.
In contrast, simply turning the LED on and then putting the MCU to sleep makes the button brighter while also greatly reducing the amount of power used.
On the light I measured, breathing mode used about 4 mA on average. Meanwhile, I’ve got moon mode running at about 1.7 mA in Anduril. And the BLF Q8’s button LED uses about 0.1 mA at full brightness. Or running the Q8 button LED in blinking mode, it’s about 0.1 mA while on and 0.01 mA while off, with a ratio of 1 to 8. So overall it’s about 0.03 mA average while blinking.
So on a 3000 mAh cell, I get roughly the following runtimes:
Breathing mode (Astrolux et al): 1 month
Moon mode (Anduril): 2.5 months
Button LED (Q8, high): 3.4 years
Button LED (Q8, low or blinking): 11 years
This huge difference in runtime is why I haven’t added breathing mode.
The lack of Instant Turbo is making the D4S a bugger to review, I’ve had to re-shoot several times noticing the beamshots aren’t bright enough. I’m too used to my many D4’s.
My green one from MTN Electronics got here Saturday and has the programming via’s like the green one shown above right. Richard was positive that the optics are glued to the MCPCB but mine wasn’t, so there seems to be a couple of variables in these, maybe some first runs got through done one way before they figured out a better way?
I picked up a couple of flat top batteries for the D4S (it’s finally at Canada customs! Hooray!) and was wondering of one would be significantly better/worse? My TA lumen tube is stuck in customs (9 days now) so I thought I’d ask the collective wisdom here instead of just guessing.
I’m hoping this hasn’t come up already and I missed it. Apologies if it has.
Well that makes things interesting. It’s both easier and harder to connect to the line of flat pads — easier because I assume it fits a standardized set of jumper pins or something, harder because it has no holes so one cannot just shove wires through it.
I hope Lexel’s connector becomes widely-used soon, and I hope we can get someone to make and sell the keys or flashing kits fairly cheap.
Yep, they are a really good performing cell….IR on my Sky RC charger puts them at 16.
Had to check my D4S with only the driver spring removed and a brass contact added as the only mod to an otherwise stock light. 5,650lm on the other IJOY @ 4,21v.
Also checked the wife’s Stock D4S I got today from Hank using the IJOY 26650 4.21v off the Sky RC charger 5,050lm @ Turn on.