Features 100% Brand new! New storage case box for easy power solutions. It can hold standard 18650 sized batteries, either for disposable or rechargeable batteries, the hard pins are great for easily soldering and connecting. Can hold 1/2/3/4 pieces 3.7V*N from single cells. Adopts impact resistant ABS material, professional made, lightweight and convenient to carry. DIY extension, you can use this with your own batteries to form a new power supply system. Great items for keeping your rechargeable batteries organized and protected. Ideal for electronics applications and Arduino DIY projects. Specifications Material: ABS plastic Type: For 18650 Battery Input Voltage: 3.7V Color: Black Attentions 1. Please allow tiny size deviations due to human measurement. 2. Please do not separate, maintain, or refit the product. 3. The wires are thin, and this product is only fit for small current load. DO NOT connect it to a load that will cause large current, stop using this product if the wires are very hot. 4. Please pay attention to your battery heat generation while using this product and do not charge inferior batteries. Package Included 1 x