Yosoo 18650 Wired Battery Holder/Case/Box/Storage in 1, 2, 3 or 4 Cell Holder Sizes, Pack of 2 Battery type: 1pc /2pc / 3pc / 4pc 18650 Case Holder 18650 Battery Holder Case with 6" leads for soldering / connecting Takes 1/2/3/4 standard size 18650 batteries side by side to form a compact battery of 3.7V rechargea Keep your batteries organized and protected