XTAR 4A Fast Charger ST2 Type C USB C 21700 Battery Charger for 3.6V 3.7V Li-ion IMR INR ICR 18650 20700 21700 22650 26650 Batteries

This is brilliant, I can use any USB-C laptop charger, to charge my rechargeable batteries. It simple to use but does not support charging smaller batteries (AAA) or low voltage batteries.

While Charging 2 18650 2500mha batteries at 4amp each the charger emitted smoke and stopped working.