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It sounds like you're looking for an adjustable power module designed to work as a 12V LED driver, which can also provide constant current for LED lighting applications. You may want to include a charging indicator as well. Here's an outline of what you might need:

Key Features:

1. Adjustable Power Module: The power module should allow you to adjust the output voltage and current settings. This is especially useful if you're driving LEDs with specific voltage and current requirements.

2. 12A 24V Input and 12V Output: This module should accept a 24V DC input and be able to output a constant 12V. The 12A current rating will allow it to handle high-power applications.

3. Constant Current Mode: LEDs require constant current to function optimally. A constant current driver is necessary to ensure that the LED doesn't overdrive or undervolt. The power module should have a feature to provide a constant current, ensuring the current to the LEDs stays stable, regardless of fluctuations in the voltage.

4. LED Driver Functionality: The module will need to be designed for driving 12V LED strips or bulbs, with appropriate current regulation for the specific type of LEDs you're using.

5. Charging Indicator: If you're powering the module from a battery or another charging source, you may want to include a charging indicator to show the current charging status (full, charging, etc.).

Example Features of the Module:

• Input Voltage: 24V DC.
• Output Voltage: 12V DC (adjustable range).
• Current Output: Adjustable up to 12A (or as needed by the LEDs you’re using).
• Efficiency: High efficiency (typically >90%).
• Constant Current Control: Ensures stable current for LEDs.
• Heat Dissipation: Efficient thermal management to prevent overheating during high-load operations.
• Charging Indicator: Use an LED or digital display to show charging status.

Potential Applications:

• LED Lighting Systems: Ideal for driving high-power 12V LED strips or bulbs with constant current control.
• Solar Power Applications: If you're working with solar panels, an adjustable power module with a charging indicator can help manage power input and output efficiently.
• Battery-Powered Systems: Using it in conjunction with batteries and providing feedback on charging status can be very useful for remote lighting systems.

Example Available Modules:

• MeanWell HLG-120H-12: A constant current LED driver that provides 12V with an adjustable output current setting. It also has thermal management features for high-efficiency operation.
• LM2596 DC-DC Buck Converter: A popular adjustable voltage and current buck converter that could work for lower current applications (up to 2-3A) but lacks constant current control.

Would you like a recommendation or a more detailed technical explanation for your specific use case?