USE-18650-3500PCBJST US Electronics Inc. | Battery Products | DigiKey Marketplace
Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger [bq24074] : ID 4755 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
All you need to know about the 3.7V lithium ion battery-Tycorun Batteries