What is the voltage of a fully charged 72V battery with 6 cells?
2 Answers
A 72V battery pack consists of six 12V batteries. A single 12V battery when fully charged reaches 14.5V, so six batteries would be around 87V. Below is an introduction to battery charging voltage and current: 1. Voltage: The charging voltage for a car battery is 12V. During the charging process, the voltage typically ranges between 13.5-14.5V. When charged in the vehicle via the rectifier, it does not exceed 15V. If using a charger, the charging voltage is generally 14V. 2. Current: During the charging process, the charging current should not be too high. It is recommended that car owners avoid using fast charging. When charging, use a current that is half of the rated charging current, and extend the rated charging time by double.
As someone who frequently works with electric vehicles, I can tell you that a 72V system composed of six batteries typically reaches around 86V when fully charged. This is significantly higher than the nominal 72V because the voltage temporarily increases during charging to store energy. I've measured my own vehicle several times with a multimeter, and right after charging, it usually reads 86-87V before gradually dropping to the normal value. This is completely normal, so don't worry about explosions. However, be cautious not to use substandard chargers, as excessive voltage spikes can damage battery lifespan. I recommend regularly checking the voltage and electrolyte levels to avoid overcharging and leakage risks. After all, battery health affects range—I've learned this firsthand when driving on mountain roads. Stable voltage ensures you can go the distance.
