Original 18650 3.7V Rechargeable Li Ion Battery 1500-2000mah Capacity refurbished - RadioGear BD
Lishen 18650 2600mAh Li-Ion Flat Top Battery 3-Pack
Amazon.com: diymore 1865O Battery Holder Double Li-ion V8 Battery Shield Micro USB 5V/3A 3V/1A Power Bank Battery Charging Module for Raspberry Pi and Arduino ESP32 (2 Holders) : Electronics
PKCELL Flat Top 18650 3.7V 3350mAh Rechargeable Li-Ion Battery