18650 Charger 3.7v 4.2v Multifunctional Lithium Battery - Temu
Versatile 18650 Li Ion 3.7 V Rechargeable Battery For Electronics, Clock, LED, Rechargeable Lamp, Bright Flashlight, And More 4900mAh, 3.7V/4.2V From Epochcom, $2.95 | DHgate.Com
4.2v rechargeable battery for Electronic Appliances - Alibaba.com
4.2v rechargeable battery for Electronic Appliances - Alibaba.com