Here is one that would solve some problems....
Take the eDGe battery and add the receiver in the following link and .... now you have a rechargeable mat-style, wireless charging battery!! If only that could happen!
http://www.walmart.com/ip/Powermat-C...ndingMethod=rr
** This other system has different type adaptors and clips. Can not tell if it would be compatible, but its idea is on the right track.
http://www.duracell.com/en-US/product/mygrid-kits.jspx#