Wurkkos 21700 - what kind of chemistry?

[jon_slider]

my guess is INR, based on this post:

What's under the wrapper (Sofirn + Thorfire 18650s)

Decided to remove the wrapper from some of my Sofirn and Thorefire branded batteries. I did a search and found speculation as to what was underneath but not definite answers. Three different batteries (all buttontops) -Thorefire 3000mah protected 18650 (came as part of a Thorefire C8S kit with batt and charger) -Sofirn 3000mah unprotected 18650 (purchased from AX seller E-battery Store) -Sofirn 3400mah protected 18650 (purchased from AX seller E-battery store) ![image]! ![image]! ![image]!…