I have that same problem (in a different car) and could never figure out why, it would be great if someone could chime in and shed some light on this
When you're talking about "charger," are you referring to just cables? If so, the cables don't actually determine the output. If you're using the built-in USB ports, they're relatively low amperage because they're primarily for data transfer - not charging. You could try a high-amperage USB adapter in the 12V power port.Could there be something wrong with my USB voltage? No matter which charger I use the charge is basically non-existant. I use the same chargers in my Jeep or Honda and they work way better so I know its not the phone or the charger and has to be the car. When plugged in the charge is so low it won't increase the charge, but it is strong enough to keep the percentage on the phone from dropping.
I'm not too sure about OP but I have this issue whilst using the USB adapter in the 12V ports. It'll work in some cars, but not in mine for some reason. It's really odd.When you're talking about "charger," are you referring to just cables? If so, the cables don't actually determine the output. If you're using the built-in USB ports, they're relatively low amperage because they're primarily for data transfer - not charging. You could try a high-amperage USB adapter in the 12V power port.