Put in a "dead" alkaline < .9v and it still fires up. Not much light but at least you can see to find more batteries.
i also put old batteries in.
I tried a LR6 with unloaded voltage ~1,3V (with 1,1V within a few sec. @ ~2,5ohm load )
and a discharged NiMH 1,15V unloaded (with 0,9-1V within a few sec. @ ~2,5ohm load )
both batteries fired the torch up.
Seems it doesn´t have a startup problem so far.
That's a good news.
also very important at least for me is
a 3years old Sanyo2,3Ah battery
that is to weak to turn on my digicam if it is stored a couple of weeks
will work with the torch too.
Unloaded Voltage ~1,27V (~ 1,17V @ ~2,3ohm load )
the current draw is lower than. On High i got 1,2-1,3A.
the output on high drop down to ~800lux@ 1m.
med 500lux and ~1A
and the low mode still give ~300lux with ~0,6A
that means you can use your old NiMH in this torch.
it´s still bright enough.
For me the current Low Mode should be Med
and I also wish a lower Low …
the current modes are not that useful in real life..
An other thing i noticed is a little tint shift to the purple side on low.
That´s at least my way to separate the different modes especially med to low.
Overall iam satisfied but the shadows in the hot spot and the high low mode makes my sample less useful. The new LED can more.
I hope MTE will build a 2AA too… with the higher voltage I hope they can achieve more dynamic in the modes. Drive the LED with 500-700mA on high over the whole battery lifetime and not only with fresh charged NiMH´s.