Features: This battery charging controller module protects batteries by preventing overcharging and deeply discharging, extending life with dc10-30v input and direct output for 12 24V storage batteries. Featuring adjustable start and stop voltages settings via intuitived buttons and a digital display, it allows precise control with easy setup through short presses and 3 second holds for flashing indicators. Ideal for enthusiasts, electronics hobbyists, and professional managing battery systems in projects like renewable power setups or automotive modifications. Suitable for scenarios such as solar power installations, backups, and off grids applications where reliabled charging protections for 12 24V storage batteries is essential. Built with durability circuit board components, this charging protections module ensures stable performances and compatibility across various dc10-30v input sources. Specifications: 1.Model: m603 2. Input voltages: DC10-30V 3. Display accuracy: 0.1v 4. Control accuracy: 0.1v 5.Output type: direct output 6. voltages error: ±-0.1V 7. Scope of use: 12-24V various batteries 8. Size: about 82×58×18mm Package Includes: 1Pc Battery charging control module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution