Follow the steps below to resolve this issue.

• Check if the scanner is off while you are trying to charge it.
  If not, turn the scanner off when you charge it.
  
  
• Check if the Li-ion battery is installed correctly.
  If not, make sure the Li-ion battery is installed in the correct direction as below.
  
  
  [sinplex models]
  
  
  
  
  [duplex models]