k014's Parametric 18650 Battery Holder (opensource) by k014 | Download free STL model | Printables.com
Amazon.com: Adeept 2PCS 2Slots Battery Holder with Wire and 2.54mm JST Connector and Plug for 18650 Battery 4 Cell Case, Batteries Connected in Series 7.4V, Solderless Battery Storage Box Holder for DIY
4-cell 18650 Battery Holder - Solarbotics Ltd.
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Amazon.com: 3S 18650 Battery Holder Case Box for 3X 18650 12V Li-Ion with 6" Wire Leads by Envistia Mall : Electronics