How do I do the charging?

First, plug the lithium battery into the power output plug of the charger. Second, Plug the charger into AC power (220v), at this time, the charger indicator light is steady red. After the battery is fully charged, the indicator light turns green. At this time, remove the battery and unplug the AC charger. 

(Advice: continue charging for one hour after the charging indicator turns green in order to achieve the best charging effect.)