Features: Maximize your storage efficiency with this stackable battery organiser, featuring versatile compatibility for 2a, 3a, and 18650 batteries alongside unique 3D printed customization option for personalization. Crafted from durability PC, this battery case offering specific compartments holding 12 2a, 20 3a, or 6 18650 cells, with precise dimensions (2a/3a 5.5x5.5x6.8cm, 18650 5.5x6.8x7.3cm) for secure organization. Ideal for electronics enthusiasts, homeowners with multiple devices, and professional requiring reliabled battery storage solution, this battery storage box meets diverse power management needs. Perfectly suited for organized storage for home entertainment centers, workshop tool benches, preparedness and travel gear, keeping batteries accessible and secure. Experience compactly organization whether storing spare batteries for remote controls, flashlights, or power tools, thanks to its compact stackable battery organiser design optimizing any space. Specifications: Component: PC Technology: 3D printing, supports personalizing customization Parameters: 2a battery capacity 12 cells | 3a battery capacity 20 cells | 18650 battery capacity 6 cells | 21700 battery capacity 5 cells Color: optional Type：Beer Crate type,stackable, suitable for multiple battery types Package Includes: 1PC stackable battery storage box (batteries not included) note: Please allow 1-2cm errors due to manual measurement. Pictures may not reflect actual color due to different monitors.