2S 5A 18650 Lithium Battery Charging Protection Board Module Charger 7.4V 8.4V Pad Module High Current Protect - AliExpress Tools
Charging 2S pack with this BMS : r/18650masterrace
5V USB Charger Module for 2S 7.4V Lithium Li-ion Li-Po 18650 Battery Cell 8.4V | eBay
Will this 2S battery charging/discharging circuit work? It's a small portable battery solution for a Raspi project. The contents in Load is in the comments- : r/AskElectronics