Smart Charger (1.8A) for 3.7V Li-ion/Polymer Rechargeable Battery Pack
Lithium Ion Cylindrical Battery - 3.7v 2200mAh : ID 1781 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
3.7V Battery and USB Battery Charger | Totemmaker.net
Tenergy Li-ion 3.7V Arlo Camera Replacement Batteries (8pk) w/ Charger - Tenergy
Amazon.com: FPVERA 3.7V 1200mAh Li-ion Battery 2PCS 3.7Volt Rechargeable Batteries with USB Charger Cable SM-2P Plug for RC Car Drift Monster Truck Off-Road Vehicle Remote Control Car High-Speed Climbing Racing : Toys
Buy Mobile Warming 3.7V Dual Battery Charger for Thawdaddy and Heated Socks at CozyWinters
Smart DC Charger (0.5A) for 3.7V Li-Ion Battery Pack
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