Integrated battery holder designed for fast replacement and flexible power configurations. Key benefits Faster battery changes: The unique design removes complex installation steps found in traditional holders, letting you batteries quickly and with less effort. Flexible power options: Supports series and parallel connections so you can combine batteries to increase voltage or extend runtime depending on your requirements. Builtin storage convenience: The battery box on the device functions as the holder, keeping batteries secure and reducing separate storage needs. Broad compatibility: Designed for use with circuit boards, electric toys, digital photo frames, electronic calendars, and other similar digital products. How it solves common problems Eliminates fiddly installations and reduces downtime when batteries need replacement. Lets you tailor power delivery (voltage or capacity) without changing hardware, useful for prototyping and mixeduse devices. Keeps spare batteries contained and ready inside the device, reducing loss and clutter. Key attributes Function: Integrated battery holder and connector system for easy replacement and configurable wiring. Compatibility: Works with a variety of small electronic devices including circuit boards, toys, photo frames, and electronic calendars. Form factor: Battery box is incorporated into the device for compact storage and straightforward access. Performance: Enables both series and parallel connections to meet different voltage and runtime needs. Practical use scenarios Prototype circuit board testing: Quickly swap batteries and reconfigure series/parallel connections to test different voltage and capacity requirements during development. Home electronics maintenance: batteries in a digital photo frame or electronic calendar in seconds, with the device's battery box keeping replacements on hand. Toy power management: For electric toys, switch batteries rapidly during play and choose series or parallel setups to balance speed and runtime. Suitable for any application where easy battery access, configurable power, and ondevice storage improve usability and maintenance.