Meter not calibrating
If your meter is not automatically calibrating, even after charging it for over 6 hours, and the voltage is only up to 28.7 or 28.8, you will need to make the following adjustment to your battery meter
1- go into the settings by pressing the ok button for 3 seconds.
2- go down the the high voltage setting
3- press the ok button to navigate, and change the setting to 28.7V (0.1V less that what it is charging to)
4 – press the escape button twice (the button like this <<)
5- after a few seconds, it should calibrate to 100%.