e7fef35f_FAQs___3M_ESPE_Gulf__Solution
[Problem] The LED showing the operating status in the charger does not come on even though the plug has been connected to an electrical outlet. [Possible Cause] Power outlet carries no voltage. Charger is defective. [Solution] 
Use a different power outlet. Have the charger repaired.
FAQs - 3M ESPE Gulf
Solution