5Pairs AAA Battery Contacts Spring Contact Band Plate Brass Battery Connector Positive Electrode Negative Conversion - AliExpress
Uxcell AAA to AA Battery Adapter, AA to C Size Battery Adapter, Metal Contacts Clear 3 Set - Walmart.com
Amazon.com: Battery Adapter Converter for AAA to AA Battery Transparent Cases Holder Shell with Metal Contacts on Bottom(Clear Color,Pack of 10) : Electronics
Uxcell AAA to AA Battery Adapter Battery Converter Cases Holder Shell with Metal Contacts on Bottom Yellow 4 Pcs - Walmart.com
BK-5003 – Aspeed Electronics PTE LTD
Amazon.com: WAYLLSHINE AAA to AA Battery Converter Adaptor with Metal Contacts on Bottom(Clear Color,Pack of 16) : Electronics
50pcs Wholesale Custom Aaa Battery Spring Contact, Spring Terminal Connector - Springs - AliExpress
EveryMarket
Buy Wholesale China D Cell Aaa Battery Spring Steel Contacts 18650,stamping Custom Oem Battery Contacts Remote Control & D Cell Aaa Battery Spring Steel Contacts 18650 at USD 0.07 | Global Sources