IS there a way to charge the battery in my TomTom VIA 52

Nicstids
Nicstids Registered Users Posts: 2
Apprentice Seeker
IS there a way to charge the battery in my VIA 52?
I am using the TomTom power adaptor and usb lead, the unit works fine but as soon as external power is gone it turns off. Is this normal for these devices?

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