High Quality 4x 3.7V 18650 ABS Plastic Battery Box Holder Multipurpose Battery Case Holder: You can use this case with your own battery to form power system supply; Case for rechargeable battery; Simple DIY recharge power supply Easy Installation Battery Holder For 4x 18650: Metallic spring with pin design for easy install and convenient for electric circuit DIY work. What You Get: 10* 4slots 18650 Battery Holder (Batteries are not included)
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