Description: Features: brand new and high quality. This battery box holder with pin connector, fit for 2pcs 18650 batteries. With weld leg design, you can easily to put the battery in it. To replace the old battery pack, safe and easy to use. With a cap and on/off switch button. Kindly remind: 18650 batteries are not included in the package, you need to purchase separately. Can only use the 18650 battery of which positive pole is flat top. Specifications: Item Type: 18650 Battery Holder Box Material: Plastic + Metal Color: Black Size: 942cm/3.541.570.79in (Approx.) Cable length: 10cm/3.94in (Approx.) Design: Serial Connection Fit for: 2* 18650 3.7V battery (Not Included) Rated voltage: for DC 7.4V Wire: 26 AWG Quantity: 1 PC (other accessories demo in the picture is not included) Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! 4.No retail package Package includes: 1 X Battery Box Holder (Batteries are not included.)