DC power supply

What is a DC Wire in Mobile Repairing?

A DC wire (direct current wire) is a flexible cable used to connect a mobile repair power supply (DC power supply) to the device under repair. It delivers a controlled, stable DC voltage for powering the device during troubleshooting, testing, or charging-related repairs.

Main Uses of DC Wire in Mobile Repair

1. Powering a Dead Phone Without Battery

• When a battery is faulty or missing, wires allow technicians to power the phone directly from a regulated DC power supply.

• This helps in diagnosing power circuit faults.

2. Current Consumption Testing

• By connecting the phone to a DC power supply via DC wire, technicians can monitor current draw.

• Abnormal readings (too high or too low) help identify short circuits, water damage, or faulty ICs.

3. Battery Bypass for Software Work

• Useful during flashing, unlocking, or software recovery when the battery is dead or unstable.

• The DC wire supplies stable voltage, preventing sudden shutdowns.

4. Charging Circuit Diagnosis

• Helps in testing charging ICs, USB ports, and PMICs by supplying power directly and checking voltage flow.

5. Activation of Mobile Boards

• Used to jump-start a motherboard to check booting status without depending on the phone’s battery.

Features:

• * Alligator Clip Test Lead can be used in electrical or laboratory electric testing work.
• * Color-coded leads allow you to test circuits without crossing wires or causing shorts.
• * Can be used as low-voltage jumper leads.
• * Product Name: Alligator Clip Test Lead;
• * Clip Opening Width: 5mm / 0.2″
• * Cable Length: 1M / 3.28ft;
• * Color: Black, Red
• * Material: Metal, Soft Plastic
• * Net Weight: 20g
• * Package: 1 x Alligator Clip Test Lead
• * Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm

DC power supply

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