Battery won't charge

There are a couple of possible causes here. First of all check the plug on the charger that goes into the cigarette lighter socket. Sometimes the end of the plug falls off so it won't charge. Also, make sure the socket you are plugging into is live. You can check this by plugging something elst, like a cell phone into it. Finally, sometimes the battery in the GPS merely wears out and has to be replaced. If these suggestions do not solve your problem then you should consider sending your gps into garmin to be fixed. Go to Garmin.com for instructions on how to do that.