Electronic Circuits: Automatic Programmable 4.2V Battery Charge, Current up to 500mA using LTH7R IC with PCB
Lithium Ion Battery Charger
How to Make a 18650 Lithium-ion Battery Charger : 7 Steps - Instructables
How to Build a 18650 Lithium Battery Charger and Booster Module
Workbench Li-ion Battery Charger
12V Lithium-ion Battery with Charger
Amazon.com: LP 9V Rechargeable Battery Charger Pack, 4 Pack 600mah 9 Volt Batteries and 4 Bay Battery Charger with LED Lights Display for Wireless Microphones, Toys, Flashlights, Guitar, Keyboard : Health & Household