When you are riding an electric car, have you noticed that the electric car cannot be charged? What is going on? Let\u2019s analyze the electric bicycle below. If the battery of an electric car is used normally, it can be used for a long time, but when we do not pay attention to charging, it may greatly shorten the use time. When the battery fails to charge, it may be faulty, but we can troubleshoot first.1. Check whether the charger is damaged and whether the charging parameters meet the requirements: that is, the initial charging current reaches 1.6-2.5\/piece; the charging voltage reaches 14.8-14.9V\/piece, and the charging floating charge conversion current reaches 0.3-0.4A\/piece, floating The charging voltage reaches 14.0-14.4V\/pc. 2. Check whether the circuit connection is in good condition, and carefully check whether the socket and plug have "firing" and arcing, and the wireless circuit is damaged or disconnected. 3. Check whether there is any dryness inside the battery, that is, whether the battery is seriously short of liquid. 4. Check whether there is vulcanization on the pole plate. The irreversible sulfation of the plate can be preliminarily judged by QN-1000 and then tested with a capacity detector. Generally, irreversible sulfation occurs when the discharge time is less than 50% of the specified capacity. In addition, when charging, the voltage of the battery rises very fast, and the voltage of some single cells is very high, which is much higher than the normal value; the voltage drops very fast when discharging, and the battery does not store or stores little. In the above situation, it can be judged that the battery is irreversibly sulfated.