“Check out the care info.”
Yep, I read it. It basically says sit there and watch the battery charge, and then pull the plug the moment it reaches 100% (if you need to charge that high), as leaving it plugged in will degrade the battery.
Seems to me that it wouldn’t take much to write a few lines of code to perform that function without requiring some guy to look like an idiot staring at his scooter for hours.
Good batteries have electronics and sensors that turn off the charging before 100%. Part of that is a heat sensor that detects overheating of the battery and will shut off charging. However, some (if not many) Chinese producers eliminate those expensive sensors with resistors to mimic heat sensors, in order to sell the batteries cheaply. The device containing the battery (as in an e-bike, scooter, or tool) relies on feedback from the sensors in order to turn on the device. Test the third prong on a battery pack for voltage and see if it changes as temperature is raised on the battery pack, if not, then you have a defective Chinese battery.