1.High quality battery holder case for easy soldering and connecting.
2.Battery Type: 1x 3.7V 18650 battery；Material: Durable plastic and metal.
3.Metallic spring with pin design for easy install and convenient for electric circuit DIY work.
4.Package includes: 10* 1slot 18650 battery case.
5.Great items for keeping your standard or rechargable batteries together and safe.