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
NiteCore Li-Ion Battery 18650 - 3500mAh, 3.7V - NL1835HP PCB protected up to 8A | akkuteile.de