Battery Type: The battery holder case can store 8AA batteries simultaneously High Performance: It allows to connect batteries in series and can be used as an external power source which output voltage up to 12V Wide Application: The battery holder can be used as an external power storage or holding batteries, which keep your batteries organized and protected Convenient to Use: With ON/OFF power switch and sliding closure that can be locked by screw and easy to carry Material: Made of high-quality ABS, resistant to impact, solid and durable Color: Black Quantity of Storage: 1-8pcs AA Batteries Material of Case: ABS Material of Coil Spring: Nickel Plated Steel Size: Approx. 13cm x 7.3cm x 2 cm Length of Wire: Approx. 15cm Output Voltage: 12V Weight: 76.5g Package Included:1 x Battery Holder Case Note:Batteries or screws are not included..Items from Sheng Xinshun's shopProducts from KJ's store