[MacDoc]

Thought I would pass this along. Bought one for $1.99 on line in canada
Here are some US choices

Twin USB out and low profile =

I find using the flat cables on the reel is most flexible but sometimes the iPhone does not like to see it as a proper charging device like so.
Those strap on cases make for a cheap and flexible mount as well.

 

[swshana]

All Weather USB Adapter for Battery Tender Battery Cable

Here is a photo (and source link) for an all weather USB adapter that plugs into a Battery Tender cable attached to your battery. Just put your USB device (camera, phone, IPAD, etc.) in the compartment under the seat and have it charged as you drive.

http://www.uniqueusbflash.com/cart/index.php?l=product_detail&p=134

 

[Bakeisback]

Here is how I added mine as we put the bike back together recently. I added a double USB to the ram mount and a double USB into the storage compartment. Will have to snap a picture of the other later.