How to do a correct test and determine whether a 18650 li-ion is a protected or non-protected battery - Quora
Rechargeable battery: Li-ion 18650 3,7V 3250mAh
How to identify 18650 cell capacity by color / code and how to tell fakes from real – [En] | Batteries diy, Electronics basics, Electronics projects diy
Identifying the Cause of Rupture of Li‐Ion Batteries during Thermal Runaway - Finegan - 2018 - Advanced Science - Wiley Online Library
UltraFire DX-2 EU Plug Universal Multifunction 18650 Battery Charger, Identification of positive and negative charger - Ultrafire.com