4*4 For Battery Pack Specification: Material: ABS. Colour: Black. Size: as shown in the picture. 18650 Holder 4*4 For Battery Pack. Integrated, Not Splicing. Inner Diameter: 18.4mm. Spacing: 19mm. For DIY Lithium Ion Battery Pack. 18650 4P 5M battery nickel strip Specification: 100% new and high quality. Type: Nickel strip. Application: 18650 battery nickel strip. Composed type: 4P. Features: high purity pure nickel. Use: Welding battery. 4S4P 12V battery Power display box Material: ABS. Color: black, blue, green. Cells: Can hold 32PCS 18650 cells. Battery Pack: 12.8V12Ah 12V12Ah 24V6Ah. Application Area: Solar System, Energy Storage. Internal Dimension: 146*94*89mm. External Dimension: 151*99*99mm. Package includes: 1*set 4S4P 12V battery box