Loose lithium ion batteries that cause fire hazard being sold on major websites
Rechargeable 18650 Li-Ion 3.7V 2500mAh Batteries Lot + Case Box for Flashlight Headlight Bicycle Light-20 Pack - Walmart.com
18650 Battery Review, Test, Specs 2020: 18650 Battery size-dimensions. What do all these numbers really mean? Wild, wild world of Lithium-ion batteries
Nitecore 18650 Rechargeable Li-Ion Battery with Micro-USB