Battery holder for 21700 cells by David martin garcia | Download free STL model | Printables.com
High Current 21700 Battery Box Holder Slot Case for DIY Projects – No Soldering Needed, Brass Contacts, Transparent Cover, Interlocking Design, 6-Pack (1 Slot Each), PC+ABS Material – Bistook
21700 Battery Holder - Battery Products - Electronic Component and Engineering Solution Forum - TechForum │ Digi-Key
Amazon.com: ZRM&E 50pcs 3X Cell 21700 Battery Holder Bracket Cell Safety Shockproof ABS Plastic Brackets 21.2mm Hole Dia for 21700 Lithium Batteries, Black : Tools & Home Improvement