HKSJOSHUA
(HKSJOSHUA_)
6
Yes you can use a 18650 in a 26650 powered light I used a couple of different 18650 cells in my ft03 light doing a output test, found out using the imren 4200 mah 26650 cell which is a fairly new cell it out performed all my 18650 cells and I have them all except ebay chinese cells