When I bought my X51v I purchased a 12v car charger at the same time. It has been several months since then, and I have the right connector for plugging into the X51v, but the mate that plugs into the car 12V is suspect. The 12v charger is not attached to the X51v adapter. Instead, it plugs into the adapter with a round cylinder plug. The 12V cigarette plug wasn't with the X51v adapter plug so I'm guessing it is the right power. I don't like to guess when it comes to my X51v.
The 12V plug indicates it converts 12V to 6V output. Is 6V the right re-charge power for the X51v?