OIAGLH 18650 Storage Case 3.7V for 2x18650 Batteries Holder Box Container with 2 Slots ON/OFF Switch - Newegg.com
Practical- Series 3.7V Flat Tip Battery Holder Case for 3 x 18650 Batteries - AliExpress
18650 Protected Button Top battery Panasonic-Orbtronic (FREE Battery Holder) 3400mAh
18650 Battery Case 3.7V 18650 Battery box 2x18650 Batteries Holder 2 Slots Container With ON/OFF Switch 3.7V in Series - AliExpress
Jex Electronics LLC > Electrical Components > Twin/2X 18650 3.7V DIY Battery Holder Case Box Base 7.4V PCB Mount With Bare Wire Ends
Amazon.com: Ltvystore 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 : Electronics