3-4.2V Input Voltage Regulator Module for Battery, 3V output Simultaneous Charging, Connected Equipment While the Battery Charges in Conversion Projects

Rechargeable Dry-Cell Conversion: The 3-4.2V input module regulates power from a single 3.7V battery for converting single-cell or two-cell AA or Triple-A devices Power During Charging: The module can supply the connected device while its battery charges, so charging does not require disconnecting the device from its circuit Defined Device Application: Built for converting single-cell or two-cell AA or Triple-A equipment, the module requires soldered wiring and circuit integration rather than plug-in installation Package Contents: Includes 2 voltage regulator modules and a packaging bag; batteries, wire, and host devices are not included Embedded Circuit Integration: The exposed PCB and labeled solder pads provide direct wiring points for installation in a rechargeable-power conversion project