Amazon.com: 18650 Battery Charger 4 Bay Smart Universal Charger for 3.7V Rechargeable Lithium Li ion Batteries Compatible 18650 26650 21700 10400 14500 16340 16650 18500 Battery Charger (Only AC Charger) : Electronics
Amazon.com: 18650 Battery Charger, 2 Bay Smart Universal USB Battery Charger for 3.7V Rechargeable18650,26650, 18500, 17335, Ni-MH Ni-Cd A AA AAA IMR Batteries,Power Bank (Batteries not Including) : Electronics
10pcs 3.7V 4.2V Lithium Li ion 18650 Battery Charger Board DC DC Step Up Boost Lithium Battery Charging Step Up Board Module|Integrated Circuits| - AliExpress