BuyiHoen Automotive Current Tester: 0.01–19.99A, LCD, 20A/48V, Portable

Compact, high-precision tool for automotive electrical checks

The BuyiHoen Automotive Current Tester is a compact, precision instrument designed to help you trace circuit faults in modern vehicles. It covers a broad current range from 0.01A up to 19.99A, so you can observe small parasitic draws or larger bursts without guesswork. The short burst rating of up to 20A at 48V enables quick checks in the engine bay or fuse box while keeping your workflow smooth and safe. A clear digital readout and sturdy construction make this tester a practical add-on for both garage sessions and roadside diagnostics.

Key benefits

• High-precision detection across 0.01–19.99A delivers actionable data for diagnosing electrical concerns.
• LCD display with integrated lighting provides readable measurements in daylight or darkness.
• Compact, portable, wireless design frees you from cords and lets you move around the vehicle easily.
• Rugged construction and stable temperature tolerance help it stay reliable under garage conditions (0°C–40°C).
• Max load of 20A within 48V for short-duration tests supports quick fault checks without removing the harness.

Practical use cases

• Trace mysterious battery drain by monitoring current in circuits such as relays, modules, and accessories during startup or idle.
• Isolate faulty modules or accessories that cause abnormal current draw, reducing time spent chasing the problem.
• Perform roadside inspections or routine maintenance with a tool that fits in a toolbox or glove compartment.
• Inspect under dark hoods or within fuse boxes thanks to the built-in LED illumination.
• Use during diagnostic sessions by both enthusiasts and professionals for quick, repeatable checks.

How it fits your workflow

In practice, you connect the tester in series with the circuit to observe current dynamics as you operate ignition or toggle circuits. The quick readout supports rapid triage, and the compact form fits in most tool kits. When used alongside manual checks, it helps you interpret whether a current change is typical or unusual.

Built to last, designed for ease of use

The tester features a durable exterior and dependable internal components, ready to withstand typical garage vibrations and occasional drops. It reads clearly on a digital screen, and the LED lighting helps you illuminate tight spaces. Important usage reminders include turning off the vehicle ignition before connecting or disconnecting, avoiding loads over 20A/48V, and keeping the device dry for best results.

Whether you are diagnosing a persistent power drain or validating a circuit after a repair, this tool aims to provide precise data quickly. Its balanced mix of portability, accuracy, and durability makes it a versatile addition to both professional workshops and home garages.

Notes for safe and effective use

• Use only within the specified load and voltage limits (20A, 48V, 10 seconds).
• Keep the tester dry and avoid exposing it to moisture.
• Do not disassemble or modify the circuitry.
• Turn off the ignition before connecting or disconnecting the tester.