arduino - Is it okay to connect 2 lithium ion battery in parallel to a charger that can maintenance 4.2V? (more detail in post) - Electrical Engineering Stack Exchange
Introduction of charging method for lithium ion batteries in parallel | Shenzhen A&S Power battery
How to Connect Lithium Solar Batteries in Series and Parallel?
Batteries in Series vs Parallel: What's Better? | LithiumHub
How to Wire Batteries in Parallel or Series - Dakota Lithium
Connecting Lithium Batteries in Parallel and Series | Large Power
How to Wire Batteries in Parallel or Series - Dakota Lithium