Industrialgrade main control chip for stable, reliable operation in charging and discharging tasks. Largescreen LCD display provides clear, realtime information shows charging and discharging current displays accumulated power generation and discharge shows temperature includes light control and delay control offers adjustable charging and discharging parameters features poweroff memory for convenience Dual USB outputs maximum current up to 2.5 A for charging two devices simultaneously Complete threestage charging management provides comprehensive control to protect and optimize battery health Use scenarios Offgrid or solar energy storage: monitor and manage battery charge and discharge, track energy flow, and schedule charging with delay control. Portable power kit: USB dualoutput charging for phones, tablets, and other devices; monitor current to ensure safe operation. Battery maintenance in a workshop: observe charging current, discharging current, and temperature; adjust parameters as needed; rely on poweroff memory to preserve settings.