I have a G2800 Casio G-shock Tough Solar powered watch. Almost a week ago, the power level meter went to the last level and it now won't show anything except the level meter. I tried to put it under a lamp to charge but no luck. I then tried my X5T with used SF batteries from my incand. lights for a couple of days directly shining on the face of the watch. The level meter is still at it's lowest. What should I do? Thanks in advance.