According to my current test, previous data may be wrong, IDK. Here is the first testA quick test with a pair of freshly charged KeepPower IMR 18350 750mah cells, 15 minutes (timed) on high;
Starting voltage = 4.19
Ending voltage = 3.68
In a MD2 body this would be used for EDC where max output would only be used in short bursts. On low the WC v.6 head provides more than enough illumination for walking, and is actually just right for indoor use. I'm really "warming up" to this wide, smooth high-CRI beam and beautiful tint, enough that I'd carry it regularly on a MD2 body.
I foresee another photo session coming....
Since the WC v.6/MD2 body combo is working out well, I've ordered a set of these batteries. The positive reviews and INR chemistry make them worth a try!
I am pretty sure that the HD blinks at 5.5vI'd be afraid of over-discharging unprotected cells. Seems like the voltage could sag too low, too fast. I suppose it would be feasible if you were watching a clock, but if you're using the light a little here, a little there, you could pass the 15 minute mark unnoticed.
I'd be afraid of over-discharging unprotected cells. Seems like the voltage could sag too low, too fast.
If I was running the light on high all the time, I agree that would be a concern. However, I find the 30 lumens of output spread so evenly is very useful and all I need 90% of the time. In a week of carrying this set up and using it every night for the final dog walk of the day, I only unleash all 1,000 of its glorious high-CRI lumens sparingly and primarily for giggles.
I don't run them down that low, but it used to be on the old HD page on Gene's website. Probably anyone running protected cell that shut off at 2.8v each would never see it.I could always be wrong, but I am pretty sure that none of the HDs have low-voltage indication.
I don't run them down that low, but it used to be on the old HD page on Gene's website. Probably anyone running protected cell that shut off at 2.8v each would never see it.
Maybe he changed it at some point.
Maybe I should put some IMRs in and let it run down and see.
Also, the shut off voltage is under load, and after removing the batteries to rest, they will bounce back higher again when no load is on them.