Originally Posted By: James_Van_Artsdalen
Sadly this isn't practical except in very general terms. Different makes of batteries behave quite differently, even within the same type of chemistry. Each basic type of battery (alkaline, NiMH, Lithium of various flavors) work in different voltage ranges with different discharge rates.

The best you can do is detect a nearly-discharged battery, and even then there are gotchas: the Notvatac doesn't do this right unless you install a new or fully-charged battery.


Thanks for the info, however I think it should be possible since Surefire UA2 Optimus possesses this feature. Maybe they fine-tuned it for their Surefire batteries. But this light has not been released yet and who knows if it ever will - I remember checking this light maybe year ago and itīs still on preorder here.