Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger [bq24074] : ID 4755 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
EU 110V 220V Dual 81650 3.7V Battery Charger
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Amazon.com: 18650 Rechargeable Battery Charger 3.7V Lithium ion Battery Charger for Li-ion 18650,18500,10440,14500,16340,16650,14650,18350,26650 Battery : Electronics
Amazon.com: EBL Universal 18650 Battery Charger for 3.7V Lithium ion Rechargeable Batteries 26650 22650 18650 18490 18350 17670 17500 16340 (RCR123) 14500 and 1.2V Ni-MH Ni-CD Rechargeable C AA AAA Batteries : Electronics
Li Ion Battery Charger Circuit Using MCP73831. | by Perceptive-ic | Medium
18650 Charger 3.7v 4.2v Multifunctional Lithium Battery - Temu