1：What is it?
Charging voltage refers to the safe voltage used when charging an electric vehicle with a charger.
2：Related Information:
Charger's Open Circuit Voltage: For three-stage chargers, the open circuit voltage is the float voltage. Typically, for a single battery, it is around 13.5V-13.8V (as indicated on the battery or mentioned in the manual). Therefore, for a 36V system, it would be approximately 40.5V-41.4V, and for a 48V system, it would be around 54V-55.2V. Considering the measurement error of a multimeter, values like 53.6V and 55.6V are considered normal since they indicate that the charger has entered the float charging stage.
Charger's Charge Termination Voltage: This voltage is commonly known as the "light-off" voltage. For a single battery, it is typically around 14.4V-15.0V (as indicated on the battery or mentioned in the manual). Therefore, for a 36V system, it would be approximately 43.2V-45.0V, and for a 48V system, it would be around 57.6V-60.0V.
Actual Charger's Charge Termination Voltage: For sealed batteries, the optimal value is around 2.4V per cell. Thus, for a 36V system, it would be 43.2V, and for a 48V system, it would be 57.6V. However, to account for charging time and "full charge" considerations, the actual values are slightly increased. For a 36V system, it could be around 44.4V-44.8V, and for a 48V system, it could be around 59.2V-59.7V. However, this may lead to water loss and shorten battery life. It is important to understand how this voltage is determined and its implications.
