c. If after the battery is fully charged, the battery pressure is still very low after being
tested according to the “a” and “b” step, then the battery is faulty, it needs to be vamped
and switched.
② The battery has electricity, when it is connected to the vehicle, the vehicle has
no electricity
a. If the battery has electricity, after connecting it to the vehicle's battery plug, opening
the electrical door lock, the vehicle has no electricity, check whether the battery plug
has already been reliably connected, restart the connecting confirmation
b. After ascertaining that the battery and the vehicle are reliably connected, open the
electrical door lock, the vehicle still has no electricity, then measure whether the
negative and negative pole of the charging port of the vehicle has electricity(having the
same pressure with the battery port), under the circumstance that the electrical door
lock is open, turn the multimeter to 200V direct voltage, measure whether the pressure
of the positive ① foot and the negative ③ foot of the battery are the same as the
pressure of the battery port
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