4 cells 18650 battery holder fixture is a single-row fixture with two magnets on each cell for strong suction. It is 4 x 18650 cell fixture. where you can assemble four 18650 cells to form series or parallel combinations battery pack for your project requirements. Specifications and Features: No. of Cells: 4 Material: Ceramic Weight: 88g Dimensions (LxWxH)mm: 83 x 58 x 15 Magnetic Holder to hold the cells Package Includes: 1 x 4 cells 18650 Spot Welding Batteries Fixture SKU: PGI-00223489 Category: Battery Protection Board