Jag35 has got a new LP-E6 battery mounting adapter. What is it? It's a simple way to use your existing Canon LP-E6 batteries to power up devices that use 5V-9V DC. This includes powering up your portable little HDMI monitors and even the Asus WiCast for HD Streaming (project I was working on). Oh and maybe even power up a small motor for the new slider? Hmm..They also have additional cables and regulators to step down the voltage if needed, but a complete solution based around existing rechargeable batteries you already have. It's got a standard 1/4 x 20 thread in the rear to make it easier to mount to stuff.
Apparently there's a DIY for this, and can be found through the following link posted over at cinema5d using a delkin lp-e6 battery plate: http://www.calumetphoto.com/eng/product/delkin_lpe6_charging_plates_for_universal_battery_charger/im26634
If you need more LP-E6 batteries, the best ones i've been using are these. They work on OEM chargers, show battery meters, and still rockin' to this day..