4 piece set of professional and practical battery adapters that convert any battery size to C size for use in a variety of devices Key benefits Secure fit: each adapter includes a battery limit slot to fix the battery in place for reliable operation and reduced movement during use. Wide compatibility: designed to convert any common battery size to C size, expanding compatibility with devices that require C batteries. Practical set: includes four adapters in a compact, easy to handle case, providing a complete conversion solution in one kit. Easy to use: simply insert the battery into the adapter and the assembly will function as a C size battery in your device. Reliable performance: enables continued use of devices without needing to stock multiple battery sizes. What it is A battery holder and adapter case kit consisting of four adapters that convert various battery sizes to C size, allowing use in electronics and other applicable situations. How to use Insert the desired battery into the adapter. Place the adapter into the device as you would a C size battery. The device will operate as if powered by a standard C battery. Compatibility and size Converts any size to C size for use in devices that require C batteries. Suitable for a wide range of electronics and portable devices that rely on C batteries. Use scenarios Household remote controls and toys that normally require C batteries. Portable flashlights and camping gear that use C size power. Wireless keyboards, mice, or other electronics that can operate with a C size substitute. Notes The kit provides a practical solution for battery size flexibility, helping to reduce the need for multiple battery types while maintaining device performance.