How to save starved lithium-ion batteries for electric cars?

1. Tandem method. Connect another 12-volt battery of normal voltage in series to the entire battery pack. For example, if the original car is a 48V20AH battery, then we will connect another 12V20AH battery in series. A fully charged 12V battery has a voltage of about 13V. After being connected in series, the voltage of the entire battery can be increased, and then charged with the original charger. After the charger is plugged in, the charger is red and the battery can be charged. When the charger turns green, remove the other battery connected in series. Then charge it normally. 2. Parallel method. For example, it turned out to be a 48V20AH battery. We have another set of 48V20AH batteries in parallel. The high voltage end will flow into the low voltage end. This method is also used by many electric vehicle lithium-ion battery dealers to detect completely dead batteries, and can also achieve the purpose of charging. 3. Low-voltage charging method. Use a small one-size charger for charging. For example, a 60V20AH battery, if you use a 48V20AH charger for charging. Generally, it can be charged. 3. Low-voltage charging method. Use a small one-size charger for charging. For example, if it is a set of 60V-20AH batteries, then we use a 48V-20AH charger for charging. In most cases like this, it can also be charged. The principle is also similar to the first one, the charging voltage is closer to the voltage at both ends of the battery. 4. Single battery charging method. Charging a single battery with a 12-volt motorcycle charger can activate the battery, but this kind of charging is relatively slow. Generally, it takes more than 7 hours to charge the battery before the battery voltage slowly rises to about 12V. If all the single blocks are charged, it takes time. 5. Special charger method. Tianneng charger automatically recognizes the battery voltage, no matter how many volts of a set of battery voltage, it can automatically recognize the voltage, and he can charge it. For example, the original car was a 60V-20AH battery, but now it only has less than 30V, so it can still be charged inside. As the voltage rises, it is fully adapted to a higher first-order voltage, and then the battery is charged. Tailing, Lvjia electric vehicles, and Jinpeng tricycles have been equipped with chargers of this brand. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.