18650 vs. 17650 realistic differences in runetimes?

[woodrow]

Hi, I could not find a thread on this, so I thought I would ask the experts in this section. I have a Fenix TK12. It runs fine off of a AW 17650. Fenix is making a 18650 tube for the light. Any ideas of what percentage of runtime an 18650 would give over a 17650?

I am not sure if I should buy the 18650 tube...or just an extra 17650 or two...since I have another light that will run on the 17650...but not the 18650. (Olight T20)

Thanks for your help!

 

[VidPro]

on average about 1/3rd more runtime than the 17650.
well worth it, depending on how much the tube costs 17650s are still (often) very good durable good capacity cells, so its not way off, there are still good 17 cells.

 

[woodrow]

Thanks VidPro, 1/3 is a pretty big difference! Ill look forward to the new tube then.

Thanks again,

brad

 

[Black Rose]

Using the same light (on high), I get about 1 hour 34 minutes runtime using an AW 17670 1600 mAh cell.

Using an AW 2200 mAh 18650 cell, I get 2 hours and 8 minutes.

Using a Trustfire 2400 mAh 18650, I get 2 hours 26 minutes.

 

[Mjolnir]

It is definitely worth it. 18650s are usually easier to find than 17670s, and there tend to be more options available to choose from.

 

[jar3ds]

18650 Ho! ... they are the 'standard' of LiON bat's... its good to use them