Car fuse current detector, with high-definition backlit screen + built-in lighting, can display readings clearly even in dimly lit cabins. Compatible with multiple interfaces, adapter is suitable for various scenarios, plug-and-play operation is easy to use, and it can accurately detect circuit abnormalities. It is a portable and convenient tool for auto repair owners to troubleshoot circuits.

Does your car have low current leakage or circuit overload? Use CNBJ-611, and you'll know immediately!
This palm-sized tester is the "circuit vision mirror" for auto mechanics and DIY car owners: with a high-precision range of 0.01A to 19.99A, it can accurately detect parasitic leakage and intermittent faults, with an error of ±2%, which is more reliable than the experience of a master mechanic; directly replace the original car fuse, no need to cut or break wires, read the real-time current in 3 seconds, even beginners can instantly become a "circuit detective".
The body is made of shock-resistant ABS + PC material, with an anti-destruction level comparable to that of an automotive bumper; with a blue light backlit screen and built-in LED flashlight, you can clearly see and read the numbers even in dark engine compartments or during night repairs. The 66cm extension cable is compatible with various vehicle models, with a 48V/20A short-term load capacity, covering all scenarios from family cars to commercial vehicles.
No more guessing faults or dismantling wiring harnesses - just plug it in, and the numbers will speak for themselves. CNBJ-611 makes car circuit faults "visible", saving not only time but also the hassle of rework.
When your car experiences sudden power loss, flickering lights, or frequent circuit fuse blowouts after modification, you don't need "trial and error" to fix it. Instead, you need the CNBJ-611 Vehicle Current Tester - a portable tool that can "speak" the faults of the circuit.
Plug and test, no hidden faults
Traditional circuit detection requires dismantling the wiring harness and using a multimeter to check point by point. It takes half an hour and may not be accurate. The CNBJ-611 directly "replaces" the original vehicle fuse: remove the faulty circuit's fuse, insert the adapter plug provided by the tester, then insert the tester into the fuse slot. After 0.5 seconds, the blue light LCD screen will display the precise current value starting from 0.01A.
Whether it's a 0.05A leakage current (enough to drain the battery overnight) or a 15A overload of equipment (possibly burning through the wiring harness), the ±2% accuracy can capture it - meaning you can precisely locate "the car's hidden power-consuming device" or "the aging and short-circuited fog light circuit", without having to rely on "disassembling and reassembling, then rechecking and reassembling" by chance.
Details tailored for automotive repair scenarios
Its design contains a "favor" for repair workers:
Dark environment savior: The blue light backlit screen is clearly visible even under direct sunlight, and the built-in LED flashlight can illuminate the gap of the fuse box, allowing for quick repair in the middle of the night without having to hold a flashlight.
Durable and robust: The shock-resistant ABS + PC casing remains undamaged even when dropped from a 1-meter height into the engine compartment, operating temperature range from -10°C to 40°C, ensuring stable operation in both northern winters and southern summers.
Compatible with all vehicle models: The 66cm extension cable can easily reach the fuse box behind the dashboard, with a short-term load capacity of 48V/20A, covering 12V family cars, 24V trucks, and even 48V mild hybrid models.
Not just a tool, but a "circuit safety shield"
For car owners, it is the "guardian" of the battery: Before parking for a long time, test the leakage current in the dark to avoid finding the car won't start when you return; for modification enthusiasts, it is a "avoiding pitfalls" tool: After installing lights and inverters, test the actual current to prevent overloading the circuit and causing a fire; for auto repair shops, it can reduce the detection time of each faulty vehicle from 30 minutes to 5 minutes, increasing efficiency by 6 times.
Small size, big power
With a palm-sized body (10cm × 4.5cm), it can be tucked into a tool bag or even a pocket. Without connecting to a power source, the built-in 12V battery can work continuously for 200 hours - equivalent to carrying a "circuit emergency room" with you.
From family cars to commercial vehicles, from DIY car owners to professional technicians, the CNBJ-611 is not a "showy toy", but a practical tool that "visualizes" circuit faults: Plug it in, read the number, and you'll know where the fault is at a glance.