The battery weighs slightly more than the required batteries and makes the controller thereby (for my needs) something better in the hand because of gravity shifts forward.
The term is terrific. If I have to invite, I can usually no longer remember when I loaded the last time;)
The length of the charging cable is good sized, so that I can sit (at the foremost end) despite cable still on the couch.
SUPER: it is a microUSB connector. The controller can therefore sometimes be filled with the cell phone charger.
Just buy it, whether hardcore gamers or casual gamers. So you're always ready to go in any case.