9V Battery snap - High Quality | Jaycar Electronics New Zealand
Amazon.com: VWEICYY 9V Battery Connector,10 PCS T-Type 9 Volt Buckle Connector Hard Plastic Shell Used in Student Experiment,or Other Equipment with Battery(T-Type, 10PCS) : Electronics
Amazon.com: 9v Battery Eliminator (9v DC Adapter & Battery Eliminator) - Replace Your 9-Volt Batteries with Wall Power Supply : Electronics
Battery Replacement for MTH systems - 9v - Dallee Electronics