I usually get about two days out of my phone battery as of now. If I plug my phone into the USB port in my car for my music it also charges the phone. Will doing so ruin how long a full charge lasts me fast enough that it will make a difference? I am thinking over time it will reduce how long the full charge will last as it is getting small charges infrequently and for at most 30 minute drives, but worried it will make it worse that much faster.