Why should lithium ion batteries pre -charged? Is there a better state in the rechargeable battery? For many lithium battery peers, do not understand why lithium -ion batteries must be charged before charging? The industry has formed a three -stage strategy when charging lithium ion batteries: pre -charging, constant current charging and constant voltage charging. So is there a best charging state in the rechargeable battery? This article will be discussed together. Why should lithium ion batteries pre -charged?