Li-Ion 3.7V 2200mAh With Charger-Protection Circuit Kit Generic | SUNROBOTICS
Lithium Ion Cylindrical Battery - 3.7v 2200mAh : ID 1781 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Tenergy 18650 2200mAh 3.7V Protected Lithium Ion (Li-ion) Bare Leads Battery - Bulk (30027)
18650 Charger Single Slot 2200mAh 3.7V 18650 800/1000/2000/2600 mAh Li-ion Battery Icr18650 From Battery Factory - China Battery Pack and Power Supply price | Made-in-China.com
Lithium Ion Battery Charger Circuit (with Diagrams)
Source 3.7V Intelligent power off Universal 1/ 2 Slots 18650 Battery Charger Adapter for rechargeable Battery 18650 on m.alibaba.com