Battery Converter Control Board 21 to 5 USB-a Type-C Output Workshop Service, Temporary Device Access

Single Board Package: You receive a single converter control board for a focused replacement or build, helping set clear project expectations before installation planning or parts matching Temporary Power Support: Use this module in outdoor jobs, work area testing, or backup power situations where a pack-based source can keep phones, lights, or small gear running Two Output Access: A USB-A port and Type-C port provide common connection options, making it easier to power small devices or add output access to a project setup Battery Power Conversion: This control board helps turn a compatible 21V pack into a 5V power source, giving repair users a practical way to reuse stored power during service work Service Ready Design: The exposed board layout with input wires suits battery repair, replacement, and project tasks when you need to bring charging output back into use without extra bulk