The battery in your TomTom START charges when you connect it to your TomTom vehicle charger, to your computer or to a USB Home Charger.
Important: Do not charge your device using your vehicle's own USB port because it is not powerful enough.
You are warned when the battery level is low or critical. You lose your connection to some TomTom services when the battery level is low or critical. When the battery is empty, your START goes into sleep mode.
Important: On device models START 42/52, START 40/50/60, and GO 51/61, the screen intentionally dims when you connect your device to your computer. The screen also dims if you use a non-TomTom charger that does not provide enough power when charging.
Note: Use ONLY the USB cable supplied with your START. Other USB cables may not work.