Musicman5150 and all,
Congrats on your new X51v that's on the way! Just to clear up any confusion, BoxWave's miniSync for the X51v will both sync and charge your X51v, even when turned on. You can find the cable here:
http://www.boxwave.com/products/mini...m-x51v_747.htm
Secondly, I know you're asking about the VersaCharger and the compatibility with the X51v. Unfortunately, it is not.

The "power-hungry-ness" of the X51v is too much for the current version of the VersaCharger to keep up with. We at BoxWave hope to have an update version of the VersaCharger in the near future to be able to keep up with the X51v and other "power-hungry" devices that are being released these days. So, please check back at
www.boxwave.com for updates!
Best Regards,
Abe