Autokcan Circuit Fault Tester – 20A/48V Car Fuse Tester | Portable & Waterproof

Overview

Autokcan’s Circuit Fault Tester is a compact, rugged tool designed for quick diagnostics of car fuse circuits. It supports currents up to 20 A at 48 V and provides a clear LCD readout along with a polarity indicator. The combination helps you assess circuit behavior with practical clarity in a range of lighting conditions, whether you’re under the hood or on the go.

Clear visibility and reliable readings

The built-in LCD display presents the measured current value in real time, while the DC polarity indicator reveals whether the current is flowing in a positive or negative direction. This dual-readout setup helps you interpret circuit conditions without guesswork, making routine checks and troubleshooting more straightforward.

• LCD screen clearly displays current value and DC polarity (positive/negative)
• Front light turns on at a press of a button, aiding work in low light
• Maximum load of 20 A at 48 V with a safe 10-second usage window
• Battery not included; requires a 12 V 23 A battery to operate
• Blade fuse testing is simple with medium and small plug options for compatibility
• Portable, lightweight, and waterproof for outdoor or workshop use

Practical use and setup

Prepare by inserting a compatible battery, then remove the blade fuse from the circuit and place the fuse into the tester’s fuse socket. Use the tester to compare current draw and confirm the presence of expected or anomalous readings. Remember not to exceed the 20 A/48 V limit and to observe the 10-second maximum for safety and device longevity.

• Easy-to-follow steps: read the manual, swap fuses, and test the circuit safely
• Use the front light to illuminate tight fuse areas in dim environments
• Rugged design ensures resilience against daily automotive testing
• Lightweight and waterproof construction supports use in varied conditions

What you get and practical notes

This tester is designed for car fuse current measurements and relay/fuse checks within its specified limits. It does not include a battery, so you’ll pair it with a 12 V 23 A battery to enable testing. The device is suitable for both routine maintenance and more involved diagnostic sessions, offering a reliable tool without promising guaranteed outcomes. Its portability means you can carry it in a glove compartment or toolbox for quick, confident checks wherever you work.