1. Fault phenomenon:
After starting, the ammeter pointer returns to positive too quickly while driving, or the temperature of the Electric SUV Car battery is too high, and the ammeter pointer still points to more than +5A after a long period of driving.
2. Fault cause:
(1) The Electric SUV Car battery is worn out.
(2) There is an internal short circuit fault.
(3) The active material on the plate falls off, resulting in too small a capacity.
(4) The plate is sulfided or the negative plate is hardened.
3. Fault diagnosis and troubleshooting:
For the fault diagnosis of Electric SUV Car batteries that cannot be charged, a comprehensive analysis should be made based on the fault phenomenon and its usage. If the Electric SUV Car battery has been used for more than one year and the above phenomenon occurs, it is generally because the Electric SUV Car battery has been worn out and should be replaced with a new one.