Regulated run time with Fenix TK40

[David18]

Using Eneloops my TK40 runs for 80 mins under regulation before the output drops significantly. Others have quoted a run time of 120 mins but
I don't believe the output would be regulated at that point. My TK40 still had useable light at 120 mins and probably would have run much longer than that, but not in the regulated regime.

Comments?

David

 

[GrnXnham]

That sounds about right.

Isn't the 2 hour run time advertised by Fenix using 2600mah batteries?

 

[Saint_Dogbert]

Light-reviews claims 1hr 50min of runtime, supposedly on Eneloops, so who knows? But 80min sounds about right. :thumbsup: Also, make sure you don't let the light run very long after it drops out of regulation, or you might get some reverse charging of the cells going on. :green: