Features: Battery Holder Box for 1pc 18650 battery This battery holder can hold 18650 standard size 1 battery. Perfect external power source for electronic DIY Be used as a perfect external power source Specification: Material: High Quality Plastic Battery type: 1pc 18650 battery Size: approx. 73 x 20 x 17mm Weight: 10g Package Contains: 1x Battery Holder Box for 1pc 18650 batter (battery not included)