Amazon.com: 2S 18650 Battery Holder Case Box with 6" Wire Leads for 2X 18650 (8V) Li-Ion Batteries by Envistia Mall : Electronics
18650 Battery Case (2 Cells) - Green - IMR Batteries
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3.7V/1.5V AA Battery Case Standard Size 18650 Battery Holder Batteries Box Clip | eBay
12V 3S 7P Li-ion Battery Case + Holder for DIY 18650 Powerwall Battery Pack | eBay
Amazon.com: 14 Slots 18650 Battery Case with Carabiner, Water-Resistant and Shockproof Battery Storage for 14 x 18650 Battery, 18650 Battery Organizer Box : Electronics