The 2x 18650 Battery Box with Switch and DC Jack is a convenient and durable battery enclosure designed for powering electronic projects, portable devices, robotics systems, and DIY applications. The holder accommodates two 18650 lithium-ion batteries connected in series to provide a nominal output voltage of 7.4V. It features a built-in ON/OFF switch for easy power control and an integrated DC barrel jack for simple connection to compatible devices. The enclosure includes a removable sliding cover with a locking screw to securely protect the batteries from accidental removal and environmental exposure.