Automotive Circuit Fault Probe Tester, 20A 48V Car Circuit Tester, 0.01A Resolution Inline Current Monitor with Backlit LCD & LED Work Light, Mini & Standard Blade Fuse Compatible

STOP OVERNIGHT BATTERY DRAIN Ready to pull your hair out because your car battery keeps dying overnight? This parasitic draw tester helps check fuse-circuit current to narrow down abnormal power draw. Ideal for troubleshooting parasitic draw, overnight battery drain, and hidden current issues in compatible low-voltage automotive DC fuse circuits. | LIVE 0.01A READING Ditch the hassle of traditional multimeters. This inline current monitor lets you read exact fuse-circuit current directly on the backlit LCD without disconnecting your battery cables. Its crisp 0.01A (10mA) resolution allows you to instantly track and compare tiny power draws across fuses to find the parasitic leak faster. | CLEAR DIRECTION DISPLAY & LED LIGHT No more guessing which side has power. The LCD instantly displays DC or -DC to help you identify power-side and load-side orientation. Paired with a built-in LED work light, this tool makes it easy to read circuitry and navigate dark, cramped fuse boxes under the dashboard, inside the engine bay, or in the trunk. | PLUG IN, READ & TROUBLESHOOT Insert the original fuse into the tester, plug it into the matching fuse slot, and read the current value on the LCD. Portable size makes it convenient for DIY repairs, garage use, and on-the-go vehicle troubleshooting. | WIDE VEHICLE & FUSE COMPATIBILITY Designed for supported Mini (ATM) and Standard (ATO/ATC) blade fuse circuits found in many passenger cars, commercial vehicles, SUVs, and RVs. Its ideal for checking under-dash fuse boxes, engine-bay panels, and tracking down battery drain caused by aftermarket accessories like dash cams or GPS. Please verify your fuse type and slot clearance before purchase.