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
Restored X2 Power Rechargeable 3.85V 2600mAh Battery - Black (CEL11469F) ( Refurbished) - Walmart.com
2600 Mah 3.7v lithium ion Battery 3.7v Refurbished from power bank, Size: 18650