Autel Powerscan PS100 Circuit Tester

Autel PowerScan PS100 Automotive Electrical Tester

The Autel PowerScan PS100 is a compact automotive electrical testing tool that functions as an AVO meter — measuring amps, volts, and ohms. It is purpose-built for shop use, covering the most common electrical diagnostic tasks: voltage checks, parasitic drain detection, and charging system verification. At under a quarter pound and pocket-sized, it travels easily in a tool belt or service bag and runs off the vehicle's own battery through the included clamps or cigarette lighter adapter.

Who This Is For

Any tech who does electrical diagnostics benefits from having a dedicated automotive AVO meter that does not require batteries and comes with a 20-foot cable. The PS100 is not a general-purpose bench multimeter — it is designed specifically for the three electrical checks that come up most often in automotive service: is this circuit getting the voltage it should, is something draining the battery overnight, and is the alternator putting out the right current? Those are the jobs the PS100 is built for.

What It Tests

• Voltage Checks: Measure voltage at the battery, alternator output, sensors, relays, fuses, and wiring connectors. Identifies voltage drops that indicate resistance problems in wiring or connections.
• Parasitic Drain Detection: Measure current draw when the vehicle is off to find components drawing power and draining the battery. This is the go-to test when a customer has an unexplained dead battery.
• Charging System Performance: Verify the alternator is outputting the correct charging current. Confirm the charging voltage at the battery under load versus no-load conditions.
• Resistance Testing: Check component and circuit resistance for opens, shorts, and high-resistance connections.

Practical Features That Matter in a Shop

• 20-foot cable: Long enough to reach from a vehicle's hood or underbody to any test point without a helper holding the meter
• Built-in headlights: Illuminate the test point in dark engine bays or under-dash areas without needing a separate work light
• Audible alerts: Audio feedback lets you monitor test results by sound while your hands and eyes are on the connection — no need to look back at the display
• Power options: Works from battery clamps (12V or 24V vehicle battery) or cigarette lighter adapter — no internal batteries to replace or die mid-job
• TFT color display: 160x128 pixel color screen for clear readings
• Blow-molded case: Protected storage that survives shop floor drops

Power Supply

• 12V or 24V vehicle battery power via included battery clamp cable
• Cigarette lighter adapter for in-cabin use
• No internal batteries required

Technical Specifications

• Display: TFT color display, 160x128 dpi
• External power: 12.0V or 24.0V via vehicle battery
• Dimensions: 126mm x 46.5mm x 35mm
• Net weight: 0.105kg (0.23 lb)
• Gross weight: 0.726kg (1.6 lb with case and accessories)
• Operating temperature: 0 to 60C

What Is Included

• PS100 electrical tester
• Battery clamp cable
• Cigarette lighter adapter
• 20-foot test cable
• Blow-molded protective case
• One-year limited warranty

The PS100 vs a Standard Multimeter

A standard digital multimeter is a general-purpose bench tool. The PS100 is purpose-built for automotive use: vehicle battery power, 20-foot cable reach, audible alerts for hands-free monitoring, and built-in work lights. For the three most common electrical checks in a shop, the PS100 is faster and more practical than a standard bench meter. It does not replace a full-featured automotive scope or an oscilloscope for waveform diagnostics — but for voltage, current, and resistance checks in a service bay, it is the right tool at the right price.

Why Buy the Autel Powerscan PS100 Circuit Tester From Autel Diagnostic Tools?

Autel Diagnostic Tools has specialized in professional automotive diagnostic equipment since 2016. We carry the full Autel specialty tool lineup. Free shipping, free tech support at 866-217-0063, full manufacturer warranty, and straight talk on whether the PS100 is the right electrical tool for your shop's workflow.

Call 866-217-0063 for quick answers and help!