Hi, I have a RH10 that I haven't used in awhile. I went to use it the other day and had a hard time getting the battery charged. It is a NH-14WM and worked great in the past. When I try to charge it, the charging icon pops up for a second and then disappears. I thought maybe it was the battery so I got a new one but the same thing is happening. Has this happened to anyone else?