This RAM does not require batteries to preserve  your scores and settings.  Simply install and pull out those pesky batteries.

Compatibility list:

Arcade Games:
Blaster, Bubbles,  Joust, Joust2, Qix, Robotron, Sinistar, Splat, Stargate

Zookeeper

***Frenzy and Berzerk require dip switch modifications per the manual***

Pinball Games

Black Belt, Clown, Devil Riders, Farfalla, Magic Castle, Mexico 86, New Stars Phoenix, Pinball Champ, Pool Champion, Robot, Soccer Kings, Spooky, Stars Phoenix, Time Machine, Zankor