The poor quality batteries that arrive already installed in electronic toys that you'd recieve on Christmas. Typically green and red, gold and red, or any combination of the three. And ususally weighing about half of what a duracell, or energizer would weigh. Toshiba is a common brand of Santa Claus batteries
person 1- Dude, did you get barreries for the digital camera?
person 2- Yeah man. They're those silver ones, ya know, the kind with the black cat jumping through the number nine.
person 1- Oh fuck! Those are like santa claus batteries. They don't even have the power to turn the camera on!
Another name by the Homestuck fandom to define Her Imperious Condescension. This comes from what a bitch she is, as well as her claws into the Betty Crocker franchise, as she is the batterwitch herself.
Originally an Australian term for a hot dog sausage (saveloy) battered and deep fried, commentary of the 2000 Olympics Men's Gymnastics by Australian comedic duo Roy & HG on "The Dream" redefined it as a move where a (male) gymnast leaps into the air, lands in a push-up position and touches his groin to the floor - thereby 'battering' his 'sav'.
See also: flat bag, hello boys, dutch wink, crazy date, party date, spinning date