Shocker battery connector: battery packs use a Molex 51005-0300 connector.  Can be ordered from Mouser (price is $0.42)

Doc Nickel sayeth that the spring retention screw (visible in the hole at the top of the frame) is 1/4-28 thread.

Shocker Sport:
power switch: C&K GT12
serial EEPROM: Microchip 24LC01B
microcontroller: Microchip PIC16LC72A (run at 2 MHz) powerswitch: C&K GT12MSAKE
intellifeed connector: www.jst-mfg.com eBH series