LM2577 + LM2596 Buck-Boost Voltage Converter Module sim808 5 KB used by bootloader)

5 KB used by bootloader) USB Interface ATmega16U2 (Official High-Speed Chip) Dimensions 68

Transmitter Input Voltage: 3–12V (higher voltage = more power)

Working Voltage : 6

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LM2577 + LM2596 Buck-Boost Voltage Converter Module sim808 5 KB used by bootloader)If you have a battery that needs a stable voltage output, then this module fits your requirements best. This module keeps your desired voltage even with the lower or higher input voltage. You would need at least 3. 5V up to 28V input voltage for this module to work. The output is controllable using a potentiometer from 1. 25V to 26V. It also has screw holes so that mounting won't be a problem. The combination of LM2596 (Step up converter) and LM2577