1. Connecting method. Another normal voltage 12 volt battery is connected to the entire battery. For example, if the original car is a 48V20AH battery, we will connect another 12V20AH battery. The voltage of the full -length 12V battery is about 13V. After connecting, the voltage of the entire battery can be increased, and then charged with the original charger. When the charger is inserted, it becomes red. At this point, you can charge. When the charger becomes green, remove other series of batteries. Then charge normal

　　2. Parallel method. For example, the original 48V20AH battery is connected in parallel. For the 48V20AH battery, the high -voltage terminal will flow into the low -voltage terminal. This method is also used by the lithium ion battery dealers of many electric vehicles to detect the battery without electricity, and it can also reach charging

　　3 Low -voltage charging method. Select a small charger to charge. For example, if the 48V20AH charger is used to charge the 60V20AH battery. Under normal circumstances, you can use a small charger to charge the lithium ion battery of this set of electric vehicles, and then replace the original charger to continue charging. For example, if the lithium -ion battery can be charged 60V, it can be charged with a 48V charger first, and then charged with a 60V charger. This operation can also activate the lithium -ion battery of electric vehicles at a certain rate (2) Find a set of lithium -ion batteries that are the same as the main battery model, and connect it parallel with a set of charging lithium -ion batteries of electric vehicles. Discharge the intact battery to recharge the battery. After several parallel charging cycles, you can also re -activate the lithium ion battery of electric vehicles (3) Try to quickly charge for one to two hours, and use professional instruments to check whether the voltage increases. If the power rises, you can choose to continue using the original charger to charge, so that you can activate the lithium ion battery of electric vehicles. If the lithium -ion battery of electric vehicles is severely power off and cannot be activated, it can only be replaced with a new battery

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