The 4 x AA Battery Holder with Jack is a convenient power solution for Arduino boards, robotics, toys, and small electronic projects. Designed to hold four AA batteries, it provides a stable 6V DC output through a pre-fitted DC barrel jack, eliminating the need for soldering or extra wiring. Popular among students, hobbyists, and engineers in Bangladesh, this holder is widely used in DIY electronics, portable devices, and small automation projects. Made from durable plastic with strong spring contacts, it ensures secure battery placement and reliable performance.