Is there any way to charge the MZ-NH1 batteries without the cradle? My cradle no longer seems to charge, but the MZ-NH1 works when connected to USB (and gets a tiny minute charge that is held for a second or two). The charging stopped working while the battery was alive, so I am pretty sure it is not the battery. I really don't want to spend $100 for the cord and cradle that Sony is charging - next time I get an R-09 and deal with AA batteries!