AJMRTC 65W DC 4.5x3.0mm Jack Charging Cable, 20V Adjustable 15V24V Power Conversion Cord for Microsoft Surface Pro 3 4 5 6 7 8 9, Surface Book Pro Portable Charging Converter Cable

AJMRTC charging conversion cable is a practical power adapter accessory built for Microsoft Surface devices. It converts adjustable DC power from bench power supplies or custom DC sources into the correct charging signal for Surface tablets and notebooks. It accepts DC input ranging from 15V to 24V through the standard 4.5x3.0mm barrel jack and supports peak 65W power delivery to match the original Surface charger specification.

Inside the cable, a smart control chip stabilizes output voltage and current, preventing unstable power spikes that may damage the internal battery and mainboard of your Surface. Multiple safety protection functions including OVP, OCP, SCP and thermal shutdown activate automatically once abnormal power conditions are detected. The cable jacket uses high-flex PVC material to resist cracking from repeated bending, while the reinforced strain relief at both connector ends extends service life under frequent plug-and-unplug operations.

It is an excellent alternative charging solution for maintenance technicians, electronics hobbyists and lab environments. You can use it with adjustable bench power supplies to charge, test and troubleshoot Surface Pro and Surface Book devices when the original official charger is unavailable. Important Note: The connected DC power source must support stable current output matching your Surface charging requirement; mismatched power supply may lead to slow charging or failure to charge.

Specifications

1. Brand: AJMRTC
2. Max Rated Power: 65W
3. Input Interface: DC 4.5×3.0mm Barrel Jack
4. Supported Input Voltage: DC 15V - 24V
5. Compatible Devices: Microsoft Surface Pro 3, Pro 4, Pro 5, Pro 6, Pro 7, Pro 8, Pro 9, Surface Book Pro
6. Protection Features: Overvoltage, Overcurrent, Short Circuit, Overheating Protection
7. Cable Jacket: Flexible Anti-Crack PVC
8. Core Conductor: Tinned Copper
9. Application: Electronic Lab Testing, Equipment Repair, DIY Power Charging, Field Maintenance