Sony A7’s series of cameras are serious contenders in the full frame market... but all that processing power demands high capacity batteries for even modest shooting times.
The new Powerbase Edge is a 49Wh lithium ion battery mounts either to the bottom of the camera using a ¼-20 screw mount, or if you have it set up as a rig, it can mount using the V-Mount on the other side of the pack. The battery is feature-packed with two P-taps and two USB ports for additional accessories such a monitor or to even charge your cell phone.
Sony cameras accepting the L-Series batteries such as the HXR-NX100 or PXW-Z150, can use the same Powerbase system; go for the PBE-S for an elegant solution.
Small Form Cine V-Mount Battery Pack 49wh, 14.8v with Sony A7 Battery Cable
Small Form Cine V-Mount Battery Pack 49wh, 14.8v with Sony L-Series Battery Cable