12V Car On-Board Diagnostics Tester Automotive Battery Replacement Tool Car Computers ECU Memory Saver Battery Leakage Detection

A 12V Car Diagnostics Tester and Memory Saver is a multi-functional tool designed to provide backup power to a vehicle’s computers (ECU) during a battery replacement. By connecting to the car’s OBDII port, it ensures that essential data—such as radio presets, clock settings, seat positions, and anti-theft codes—are not lost when the main battery is disconnected.
Key Functions
ECU Memory Saver: Supplies a constant low-level current to the car’s electronics to prevent them from resetting to factory defaults during battery swaps.
Battery Leakage Detection: When the car is off, the tool’s digital display shows the current draw (amperage). A high reading (typically above 5A) can indicate a parasitic drain or electrical “leakage” that would otherwise drain the battery overnight.
Real-Time Diagnostics: Features a dual-screen display to monitor both voltage (to check the health of the backup battery) and current (to track power consumption).
Built-in Protections: Most models include reverse connection protection and over-current protection (often via a 5-amp fuse) to prevent damage if the clips are accidentally swapped or if a high-load device like headlights is turned on during use.
How to Use It
Connect to Power: Attach the tool’s alligator clips to a fully charged 12V spare battery or a jump starter.
Plug into OBDII: Insert the other end into the vehicle’s OBDII port (usually found under the dashboard).
Confirm Connection: Verify that the tool’s LED or digital display is lit before removing the old car battery.
Replace Battery: Safely swap the main battery while the tool maintains the vehicle’s memory.
Are you planning to use this for a specific vehicle model? Some modern cars have unique power management systems that may require a specific reset procedure even with a memory saver.

You can purchase 12V car diagnostic testers, ECU memory savers, and battery tools directly from Jabedul Dewan Trading Co, LLC in Dubai or through several major online and local automotive suppliers in the UAE.
Featured Merchant: Jabedul Dewan Trading Co, LLC
This company is an authorized dealer for major diagnostic brands like Thinkcar, TopDiag, and Humzor. They have both a physical storefront and an active presence on Amazon.ae where they sell circuit testers and diagnostic kits.
Amazon.ae
Location: Nesto Hypermarket, Meena Bazaar, Shop F98, 3 64 St, Al Fahidi, Bur Dubai.
Contact: +971 50 997 0171.
Hours: Open daily from 9:00 AM to 11:00 PM.
Online Shop: auto-scan-tool.com.