6 AA 9V Battery Holder with Cover and ON/OFF Switch Double A Battery Case with 5.5mm x 2.1mm DC Male Plug(Black)

1. Designed to hold 6 standard AA batteries in a series configuration, this holder delivers a stable 9V power output. It serves as an efficient and cost-effective mobile power supply, offering a much longer running time than standard 9V block batteries for your various electronic projects.
2. Pre-installed with a standard 5.5mm x 2.1mm DC male plug at the end of the durable wire leads. It offers instant plug-and-play compatibility with Arduino boards, smart robot cars, development kits, LED lighting strips, and compatible electronics without additional soldering.
3. Engineered with an inline single-layer layout, this flat battery container features an incredibly slim 19mm profile, making it easy to hide or paste flat. The protective sliding cover keeps batteries firmly locked inside, accompanied by a dedicated screw hole to secure the lid tightly against dropping.
4. Features a built-in sliding ON/OFF switch on the casing, allowing you to manage the power output instantly with a simple slide. This convenient control eliminates the hassle of repeatedly plugging and unplugging your connected devices, protecting battery lifespan.
5. Features high-rebound nickel-plated steel springs that offer reliable electrical conductivity and corrosion resistance. The heavy-duty plastic shell is robust and heat-resistant, ensuring long-term reliability and a snug fit for your batteries.