Hello & Welcome,
When you turn on the unit, either in or out of the car, does it stay on long enough to see the battery charge level?
If you have fully charged the battery (garmin says 3 hours to charge), either by an AC adapter or car charger and the battery level still says low, then I believe you have a battery that is going bad.
Unfortunately, the battery in these units is not user replaceable. It would have to be replaced by the factory or at a shop that can do it. I checked the Garmin site and it says that this thing should have a 1 year warranty, so they should cover the cost of parts and repair. You would be responsible for shipping.
I hope this helps. Please let me know if you need more information.
Take Care, Greg A.
Before sending the unit to Garmin for a battery change we need to check your charging systems... There are number of things that can stop a Nuvi from charging...
I have posted an assist to Greg...
Neil reminded me to ask you if you have tried to charge the unit using a computer USB cable?
Just a little extra advice on the charging of the Nuvi, you mentioned that when on the vehicle lead it still showed low battery, this can only be one of two things.
As Greg has said this can point to a faulty battery (in this case shorted) and so if this proves to be the case then you should return the unit under warranty and accept Gregs answer.
The other thing it can be is a faulty vehicle lead, you need to try the following:
1. Text your Cigarette lighter socket with another device or preferably try the unit in another car that has a known working socket
2. Check the fuse on the lead, this is in the cig plug on the lead, just unscrew the end and you will see a glass fuse inside
3. If still no luck then try connecting the Nuvi to your computer via a usb lead and see if it will power up in PC connect mode
If still no luck try resetting the unit by pressing the reset switch with a straightened out paper clip or holding the power switch on for 10 seconds...
If this solves your problem then please click Accept otherwise Gregs answer is valid and you should Accept his answer
The unit charges fine through the USB or AC adapter. It does not charge through the 12VDC power cord, although an XXXXX XXXXXght is showing on the cord lighting. It's supposed to show green when it is powering up through the 12vdc cord. The fuse is ok, as I've replaced it and checked the replacement fuse for continuity.
The unit won't hold the charge, but it should function even with a weak or bad battery through the 12vdc power cord.