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Re: Battery drain while on charger?
Take a look at the amperage that your wall changer gives you(1 amp) and then compare that to the car charger you are using. The voltage may be the same but if the amperage is not enough it won't work. the car charge may have enough amperage to charge your phone while its off or in standbye but not when it's doing something that takes a lot of juice like navigation.
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