UltraFire 3400mAh 3.7V 18650 USB Rechargeable Lithium Battery with Pro
Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger [bq24074] : ID 4755 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
NITECORE NL2153HP 21700 5300mAh 3.6V 19.08Wh High Drain Li-ion li Rechargeable Battery UI1 UI2 CI2 CI4 Smart Charger - AliExpress
Paleblue | USB Rechargeable Lithium Batteries
Nitecore NL1836R USB-C rechargeable 18650 Li-ion battery, 3600 mAh | Advantageously shopping at Knivesandtools.ie
Beston USB 1.5V AA Lithium Rechargeable Battery 2200mWh,AA