$19.99 - 4 x 18650 Battery Holder - Waterproof with USB & DC Ports - Tinkersphere
Amazon.com: 4S 18650 Battery Holder Case Box for 4X 18650 15V Li-Ion with 6" Wire Leads by Envistia Mall : Electronics
18650 Battery Box Holder Batteries Case For 4*3.7V 18650 Lithium Battery For Soldering Connect – Deep Cycle Power – 18650 Cells and more
Battery holder: Li-Ion 18650 Battery Holder (2S2P) With 2.6" long 20AWG & PCB
10pcs 4 Slots 18650 Battery Holder Plastic Case Storage Box for 4*3.7V 18650 Lithium Battery with 8Pin Sale - Banggood USA
Battery holder: Li-Ion 18650 Battery Holder (1S4P) With 2.6" long 20AWG & PCB (1S4P-18650)
abcGoodefg 18650 Battery Holder with Pin, 4 Slots 3.7V 18650 Battery Holder Storage Box Case 3 Pack
4-Way 18650 Battery Holder - DFRobot
18650 Battery Case Holder, 5 Pack 3 Slots x 3.7V DIY Battery Storage Box, in Parallel Black Plastic Batteries Case with Pin for 3 x 18650, by Ltvystore
4 Cell Li-ion 3.7V 18650 Battery Holder Case Plastic Lipo Battery Holder with PC Pin - China 4 Cell Li-ion 3.7V 18650 Battery Holder and with PC Pin