[chbot] Aliexpress 18650 holder/supply + charge controllers

[zl3ag at radioengineering.com]

As promised here are the Aliexpress URL's for those items I passed 
around at the last meeting...

https://www.aliexpress.com/item/ESP32-ESP32S-For-Wemos-For-Raspberry-Pi-18650-Battery-Charge-Shield-Board-V3-Micro-USB-Port/32846043161.html

https://www.aliexpress.com/item/1PCS-12V-100A-4S-BMS-Li-ion-LiFePO4-LiFe-LMO-Lithium-Battery-18650-Charger-Battery-Protection/32840060289.html

https://www.aliexpress.com/item/3S-20A-Li-ion-Lithium-Battery-18650-Charger-PCB-BMS-Protection-Board-For-Drill-Motor-12/32799522542.html

https://www.aliexpress.com/item/4S-40A-Li-ion-Lithium-Battery-18650-Charger-PCB-BMS-Protection-Board-with-Balance-For-Drill/32839442621.html