YUNIQUE Belgium 2 Pcs Rechargeable Lithium Battery 3.7 V 802540 Battery 3.7 V 1000 mAh with Protection Panel for WiFi Kit ESP32 Development Kit for Arduino Nodemcu : Amazon.com.be: Toys
Lithium Ion Battery - 1Ah - PRT-13813 - SparkFun Electronics
3.7V Standard Lithium Polymer Battery LP603450 1000mAh