A:Answer Hi there!
You shouldn't need to charge your device before a trip, we really advise to keep it plugged in whilst in the car so that it can perform at its best. However, in the case you can't use the CLA adapter ,you can always charge for two hours, then the battery should last approximate two hours (this may vary though). Any other questions, you know where I am. Cheers, Sam at TomTom.