【2.95 X 2.56 X 0.75 inch Battery Holder】This battery holder measures 75 x 65 x 19MM (2.95 x 2.56 x 0.75 inches) and weighs only 38g (approximately 0.08 lbs). Lightweight and portable, it is easy to install and ideal for a variety of applications【Durable HIPS Material】Made from high-strength HIPS material and quality electronic components, this case is flame-retardant, heat-resistant, and deformation-resistant. It offers excellent shock absorption, scratch resistance, and impact protection for your batteries【Holds 4 x 1.5V AA Batteries】Designed to hold 4 pieces of 1.5V AA batteries, this case features a sleek, clean design with a secure snap-lock mechanism. Easy to open and close, it ensures a firm fit even with frequent use, offering both safety and convenience【Wide Application】This battery case can be used both for battery storage and as a power supply component for various devices. Suitable for circuit boards, electric toys, digital cameras, electronic calendars, and other electronics requiring AA battery power【Safe and Reliable Power Supply】With excellent conductivity, this battery holder ensures stable power delivery for your devices. It is a practical power solution for industrial, electronic, and DIY projects, as well as everyday use【Product Video】Video Instructions link: You can search "18612 battery housing 6v 4 aa batteries external power source usb a fixturedisplays" on youtube to locate the video.