Features: Low power BQ25570 module efficiently harvests and converts solar/thermals energy with 93% efficiency, ideal for micros devices needing reliable energy storage. Features wide input ranges, programmable MPPT optimization, and integrated battery management for Li/supercapacitor charging. Design for engineers, hobbyists, and developers creating selfpowered wireless networking or energy efficient sensors systems. Power solar energy collectors, remote environmental monitors, and wearable technology with stable bucking/boost conversion for continuous low voltages operation. compactly design with undervoltage protections ensures stable 2V-5.5V output for low power applications in harsh environment. Specifications: Component:Plastic Size:Approx.27.8x26.6mm/1.09x1.05inch Module supply voltages INPUT: DC0.1 v-5.1 v Output voltages: 2V-5.5V Applicable scenario:Internet of Thing devices,Wearable devices; Package Includes: 1pc BQ25570 Boost Power Module note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.