Today let’s talk about car lithium (li-ion) batteries 

In the past, among the two most dangerous modifications of vehicles (electrical system and oil circuit), we have roughly talked about the lithium battery product. Today, I took advantage of a friend to bring a lithium battery that was seriously short of power (only about 2 volts left). Let’s take it apart and take a look at the structure inside and talk about the concept of using lithium batteries correctly!