The reason why new energy vehicles cannot be charged fast is that the technology has not yet been reached. The reason why new energy vehicles lose power and cannot be charged is:
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1, the charger of the tram is damaged, you can borrow a charger with the same type of interface to try whether it can be charged;
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2, the battery is damaged, test with a multimeter, the resistance of the battery is not infinite;
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3. If the battery pack is damaged, you can open the battery box and measure the voltage and resistance of the battery pack.