1. Truly High Efficiency and Low Heat Generation: High-performance architecture, synchronous rectification for both boost and buck converters, typical efficiency 95%! 2. Robust Components: 7 MOSFETs! (4 for power conversion, 1 for input reverse connection protection, 2 for charging reverse charging protection) 1. **High-frequency, low-resistance solid-state capacitors for input and output filtering! High cost! Low ripple!** 3. **Professional battery charging:** The constant voltage and constant current output voltage and current are adjustable! It also features a high-efficiency, low-heat, high-cost MOS-type reverse-current protection circuit! Safe and professional! 4. **Comprehensive protection functions:** Input reverse connection protection (using MOS components/high efficiency), Input overcurrent protection, Input undervoltage protection, Output reverse current protection (using MOS components/high efficiency/high cost), Output short-circuit protection. 5. **Rich indicator light functions:** Red and blue lights illuminate during constant current output; blue light only illuminates during constant voltage output; blue and green lights illuminate when the battery is nearly fully charged; green light only illuminates when fully charged! Features: Input Voltage: 5-35VDC Output Voltage: 3-29V Output Current: 0-8A Input Current: 10A (MAX) Output Power: Rated 120W, Maximum 150W with Enhanced Heat Dissipation Typical Efficiency: 95% (between 93%-96%) Operating Frequency: 200kHz Board Dimensions: 91*53*23mm Color: As Shown Material: ABS Package Contents: 1*Automatic Buck-Boost Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.