Expectations vs. Reality: Making Sense of Battery Voltage & Percentages - Renogy United States
Here is a chart that shows stock battery % compared to the voltage for the stock battery. Best to keep the battery between 30-80% for max life. : r/Surron
How is the battery percentage calculated? - Quora
Managing device Li-ion battery power with MCU-controlled pulse width modulation - Embedded.com
Expectations vs. Reality: Making Sense of Battery Voltage & Percentages - Renogy United States