When I charge my 7730L from a 12V source, I repeatedly get a "slow charge" beep and message (sometimes every 10 seconds).
I am using a 2.1 amp cigarette lighter charger.
There is no way to turn off the beep for this particular message, so I have to turn off *all* audio alerts.
Also, even with the display turned off, the message activates the display, so the display is always on (very annoying at night).
This seems like a programming bug - can anyone else replicate this problem?
Here is the complete message:
"Slow Charging: To charge faster, use the original charger."