Features: Crafted from durable plastic material, this battery case provides secure storage and convenient access to your 18650 batteries. Stay organize and ready for any power needs. Suitable for wide ranges of users, including enthusiasts, hobbyists, and individual who rely on 18650 batteries for their devices. Experience the convenience and versatility of this battery case. Easy Installation Battery Holder for 18650: Metallic spring with pin design for easy install; DIY 18650 Battery Storage Box; You can use this case with your own battery to form power system supply; Case for rechargeable battery; Simple DIY recharge power supply Specifications: Material:Plastic Option Type:1Slots 18650 Battery Case,2Slots 18650 Battery Case,3Slots 18650 Battery Case, 4Slots 18650 Battery Case; Color:Black Package Includes: 1xBatteries Box note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.