I have a Motorola Micro-USB charger that I've used at times to charge my 3yr-old TT-3rd edition. I've used this charger off and on for the past 2 years without problem ? and the 3rd edition's battery still holds a charge. This is the same type charger used to charge Motorola's RAZR phone [I](pictured below).[/I]\n\n[IMG]http://lh4.googleusercontent.com/public/sWkIVlWgmr1fKaubwTFFDPSuyPfjXAOEWWVBpSTtE765vAo5II3ajLhdlLdqiUdg9tRYLD-uItVm5M51YS2pXKWWjulFHrGNcn7-j8DzrhqOKe8aBV6KeQCsa_jx2XFiDtu1zSOOek4hD4SCxXCJjzJLysGqzlqzWOvoXfITK4pDlEggiA7-fEmVYKC0Zowlbd5n[/IMG]\nBut, I wonder if it's safe to use this type charger for two reasons...\n\n[LIST=1]\n[*]The label on the plug says, "from 4.5v to 9.5v 850ma max". I'm pretty sure the TomTom unit has a regulator inside to protect the unit from over voltage as do cell phones.\n[*]I noticed that when charging the TomTom with this and turn on the TomTom, it won't find any satellites until I unplug the charger from the wall. It's like the charger generates interference.\n[/LIST]\nIs this type charger safe to use?\n\nThanks.