just overpriced product ,which exist only becouse tax and 8gr safty us gaverment ruls
ill give example of local israelly market - no one buy them any more -
for 1/3rd of price you can get good chiniz batteries
for example - 160 w battery cost about 300$ , the ab-90 w cost 400
i run city teck 95 w which cost me 200 each -for almos 1 year qwith out any problem
The Anton/Bauer QR-DVX Gold mount allows you to run the DVX and accessories from the same battery. The bracket provides a 7.2 volt output to the camera, and a powertap output to run lights. If you need to run additional accessories, purchase a powertap multi- this will give you four outputs--allowing you to run, light, (2) wireless receivers and hard disc recorder all from one battery. Many of the batteries have a 3 year warranty and also have the real-time display. The realtime display lets you know how much battery is remaining-- it will recalculate the remaining battery runtime when you turn accessories on or off.
There are many Gold mount adapters depending on which camera you are using.
More info at:http://www.antonbauer.com/7_14_gold_mounts.htm