Power your projects easily and reliably with this 8 x AA battery holder, designed for quick connection to devices using a standard 2.1mm inner / 5.5mm outer barrel jack. Featuring an integrated On/Off switch, this holder gives you simple power control without unplugging or removing batteriesperfect for prototyping, robotics, or portable electronics.

Features:

• Holds 8 standard AA batteries (1.5V each) for a total of 12V output (nominal)
• 2.1mm (ID) / 5.5mm (OD) barrel plug for easy connection to DC jacks
• Built-in On/Off switch for convenient power management
• Durable plastic casing with secure battery fit
• Compact and lightweight for embedded or mobile projects

Ideal for powering microcontroller setups, LED strips, wireless modules, or any 12V-compatible device. Just load up your AA batteries, plug in, and switch on.