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
4*10 18650 battery holder ( integrated, not stitching) Used for 4P10S 36V 10ah li-ion battery Pack electric bike battery bracket
PARALLEL Battery Holder for Two 18650 Lithium Batteries
Battery Holder for 4x 18650 Batteries, SMD Style
Amazon.com: 18650 Battery Case Holder, 4 Pcs 2 Slots x 3.7V DIY Battery Storage Box, in Parallel Black Plastic Batteries Case for 2 x 18650 Ltvystore : Electronics