TOMTOM START 42- Battery life and charging

humayra25 Registered Users Posts: 1
New Traveler
Hi, I bought a TomTom Start 42 recently for my car, however, the booklet that comes with it is very vague.
How am I supposed to know if my TomTom is fully charged and how long do I charge it for? There is no indication whatsoever to know that my tom-tom has been charged.

I planned to use it today to go somewhere but when it came to putting the device in my car's usb port, as was instructed, a message came up on my tom-tom saying that the battery will die, even though I had charged it the night before.


  • Niall
    Niall Posts: 11,130

    That is the problem, the USB ports in your vehicle provides only 0.5Amps whereas your device should have 1.2Amps to run AND charge the battery. With a car USB port the reduced power means that the device tries to save it's power requirements by dimming the screen, reducing power to the SIM thus dropping traffic info, and, as you have found out, it then powers off.
    Try plugging the original cable into the original cigarette lighter charger, does it then keep shutting down?
  • YamFazMan
    YamFazMan Posts: 20,976

    Tap the 4Dot (.... Menu) button... On the Menu Screen top right is a battery status Icon

    Charging... Displays when Connected to a Power supply
    368fa599-f465-4a45-9274-b2b29b56a6d1.jpgFull Charge... Displays when Connected or NOT Connected Power supplyebebfcff-7cf3-43d5-9479-ef4b7f2a85ed.jpgHalf Charge... Displays when NOT Connected Power supply5c45ac4c-1a65-45a0-9b3b-8b88879a94cc.jpgLow Battery... Displays when NOT Connected Power supply29b0c6f3-11f1-4d8f-9543-eef314472a31.jpgOne of the worst things you can do to a Lithium battery is to run it flat so at a certain percentage of discharge (Unspecified)... The device will go into 'Power Saving Mode' the screen will dull, and the device will eventually turn itself off (Not Sleep)

    There is also a Battery Status display available on the devices Status Screen
    Press and hold the on/off button until you hear a drum-roll sound Continue to hold the on/off button until the Black & White Status screen is shown.....
    If you are worrying about the device charging, you might consider one of these gadgets

    b23e2fef-ffbf-4127-80b0-646533d6f987.jpg Simply plug the device into the USB socket and plug your lead into the USB Doctor, the device will display the Voltage and Power being used by your various USB devices
    I have one of each type they're only peanuts to buy, search Amazon/eBay for USB Doctor