Battery voltage measurement standard template-I

To save your time, you need to watch the operation video I attached carefully. There are a few points to note: 1. The battery is fully charged and the charger shows a green light. You need to plug the charger into the battery interface. 2. Use the bicycle key to turn on the battery switch. 3. Use a multimeter to turn on the correct gear. Pay attention to the gear setting in the attachment. Follow the video tutorial. The result shows that the value of 40V-55V is the correct value. First fully charge the battery, then take a photo of the entire test process and send it to me. I will send it to the engineer immediately and give the diagnosis result.