Hey Adam, Try AbelCine as they sell MoVI M10's and accessories. Jason, as far as I know, the batteries you've linked wouldn't work because they have the wrong type of connector. You need a JST connector to plug into the MoVI. -K
You're right Kurt, you would need an adapter or have to solder your own JST connectors. I forget sometimes I personally customize all of my own gear.
The Freefly batteries are in stock. http://store.freeflysystems.com/collections/movi-accessory/products/freefly-movi-battery
I just ordered from AbelCine this morning and an additional charger. Not sure if they drop ship from FreeFly, but hopefully I will get mine soon. Thanks everyone. I rather have extras than run out.