I want to install a USB charging port in my car similar to this. Before I disassemble the cig lighter adapter I have and put it inside the console, I want to make sure that it's one that can provide a full charge, not just a trickle. I'd read that the trick is to get one rated at 1000mA which I did, but I've also read that some charger with that rating still can't provide more than a trickle charge. Short of plugging in my phone to that charger and using it for a while to see how quickly it charges, is there any way to see if the phone is getting a trickle or full charge?