Lithium battery testing is a relatively complex technology;
It is generally judged by simple methods:
(1) Look at the charging time: if it This is the time stated by the manufacturer Consistent, because as the performance of the lithium battery decreases, the required charging time also decreases;
(2) Look at the cruising range of the battery at lithium after being fully charged. For example, the manufacturer. guarantees that the new electric vehicle does 50 kilometers. The result Now it can only travel 40 kilometers, which means the lithium battery capacity is 40/50*100%=80% of the original one. this is no longer new.