|
If you are charging through a USB sync/charge cable, the advice is correct. USB charging delivers lower power (with some, less than half) of what the provided power supply delivers through the power port. If the provided power is not enough, then the battery can slowly drain while it is being used (though not nearly as quickly as without the power flow). When using a USB cable for charging, it is best to leave the device off. If you must use the device at those times, remember the battery will most likely still be required to deliver some juice.
If you need to have the device powered while in the car, a better option would be to get a car charger that plugs into the power port as these deliver a stronger flow than the options that use a USB cable.
|