Will this sucker work with the 722/744's?
http://www.bhphotovideo.com/c/product/465330-REG/Impact_NPF975_NP_F975_Lithium_Ion_Battery.html
I just picked one up. Have not had time to give it a workout as far as runtime performance.
As far as physical compatibility, no problems. Pulled it in and out of the unit a bunch of times. Makes good contact. Based on the general feel of resistance it feels like just a slightly little more snug fit than the branded Sony NPF970 I've been using. But really slight difference.
At this point I feel pretty confident that most importantly it does not feel so tight to worry about any damage to the unit side male pins, and also does not feel like it will require the commonly mentioned cyanoacrylate reinforcement to keep the female receptacles on the battery side in place either.
Will get back after Ive gotten the time to setup to do a couple of run time evaluations, but at this point so far, so good ....