the batteries are only 2-3 monthes old. It will start blinking red but when you put it on the cradle it just stays red. When I put it on the cradle it doesnt recognize that its on there.
ya i have the duo too...the cradle is terriable...try lifting the mouse out and setting it back down...i know it sounds stupid but some times it just isnt set in the cradle correctly.
Any way i just ended up getting the MX1000...much better mouse...much better charger...