Magellan Maestro 4040 GPS Receiver "mean phone replace system battery" Questions

...mean they are. the title says 4040 but your post doesnt say what model you have, so if you have something other then what i have provided below, please let me know. Ill assume you have either a 31XX, ...

phone to Garmin. Plug your charger cord into the device and your computer (do not use a laptop, you need the higher current from a desktop for this). Hold the power button down for as long as it takes

...mean roll it in its fixings just to improve the termination connections. This will make the screen flash back with the previous display momentarily and then go blank. No need to wait 2 hours, do it ...