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...