Yes I tried charging it as well but it acts as if it is fully charged (the indicator goes to full scale and stays). When I remove it from charging the indicator drops 1 bar until I connect a atomizer then it goes up to fully charged and refuses to fire and gives the low power prompt.
Mine was doing pretty much the same thing after a couple of months of use. I ended up donating it to a member who needed a part for his. He took it apart to see if he could fix it first. He told me it had juice inside which had caused damage and was not salvageable.