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
Holder for 18650 lithium battery
PARALLEL Battery Holder for Two 18650 Lithium Batteries
4-Cell 18650 Battery Holder – HandsOn Tech
Battery Holder 3 Cell x 18650 Price Jsumo | JSumo
18650 Battery Holder Bracket by orax | Download free STL model | Printables.com