Amazon.com: 18650 Battery Case Holder, 5 Pack 3 Slots x 3.7V DIY Battery Storage Box, in Parallel Black Plastic Batteries Case with Pin for Soldering 3 x 18650, by Ltvystore : Electronics
20pcs/lot Plastic 18650 Battery Holder Bracket Cylindrical 18650 Case Cell Holder Safety Anti Vibration Li ion Battery Holder|Battery Storage Boxes| - AliExpress
2x Dual Place 18650 Battery Holder with Wires
ABS 18650 Battery Holder - 3 Cell for Robotics, Sri Electronics | ID: 21663017848
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5*13 (5P13S) 18650 Battery Holder and Pure Nickel For 13S 48V 10Ah 15Ah Lithium | eBay