ECU Parasitic Analyser

This ECU Parasitic Analyzer (EPA) is the ultimate tool for Battery Diagnostics, Parasitic Drain detection, and ECU Memory protection. A revolutionary product designed for automotive workshops, engineering specialists, and field service professionals.

It has 3 combined functions of Battery tester, Parasitic Drain detector, and an ECU Memory Saver (3 functions in one device) to help technician’s do their work safer, faster, and more efficiently. Because today’s modern vehicles come with increasingly complex electronics and sensitive ECU systems. Replacing a battery or detecting a parasitic drain is no longer straightforward. Traditional methods of jump-starting or replacing batteries with the engine running are unsafe, risk of damaging critical systems and void warranties.

Exclusive Invention

1.       Battery Health Test

This test checks the battery condition and cranking effectiveness during starting based on its voltage profiles. Fast, accurate diagnostics prevent unnecessary battery replacements.

Applicable to multiple battery chemistries such as Lead-Acid, AGM, Gel and LiFePO4 batteries and measures the:

* Battery Voltage

            * Max Voltage Drop (under load)

            * Average Voltage Drop

* Cranking Time

* Pass/Fail Result for quick decision-making

2.       Parasitic Amp Drain Detector

This test measures the current Amp draw in the car when engine off (car key removed) to determine abnormal current leaks caused by stuck relays, faulty modules, or aftermarket accessories.

* Auto-ranging detection (0.01A – 4A): from micro-leaks to heavy drains.

* Saves hours of manual testing and avoids customer comebacks due to missed issues.

3.       ECU Memory Saver (OBD2-Powered)

*It provides stable power to keep alive the ECU, radio, seat, window and other electronic systems and maintain its memory-based system settings during battery replacement.

*No more customer complaints about lost settings after service.

*It works mostly on all vehicles with OBD2 (12V & 24V).

Unique Features

1. Powered by 2000mAh 12V Lithium-Ion battery

   Its internal battery is small and portable, which provides sufficient power to the ECU during battery replacement and parasitic testing.

* Allows testing even with a disconnected vehicle battery.

* Rechargeable with overcharge/discharge protection.

2. Colored LCD screen

It is equipped with a bright and colored LCD (display size 60mm x 46mm)

3. Clamp Cable to connect external 12V car battery for prolong current leak testing

4. OBDF Clamp cable - to ensure compatibility with vehicle (typically post-2010) having OBD2/DLC port managed by a gateway module and unable to provide backup power through the OBD2 port.

Functions/ Usage

1. Battery Health Test

It checks the battery’s condition during cranking.

Procedure

1. Connect: Plug the OBD2 cable of the EPA into the vehicle’s diagnostic port.

2. Switch Ignition On: Turn the vehicle’s ignition to ON (do not start the engine).

3. Select Mode: On the EPA, select “Battery Test.”

4. Start Test: Follow on-screen instructions. You will be prompted to crank the engine.

5. Get Results: After cranking, view the PASS/FAIL result on screen. Scan the QR code with mobile phone/ QR scanner and test results transfer to phone including:

   · Battery Voltage

   · Max Volt Drop

   · Average Volt Drop

   · Cranking Time

2. Battery Change using ECU Memory Saver

It provides power to ECU, radio and other electronic system to keep alive and maintain its electronic memory-based settings during a battery replacement.

Procedure

1. Power ON the ECU Parasitic Analyser (EPA)

2. Connect to Car:

   First, try via OBD2: Plug the cable into the DLC car port. If the EPA screen shows “Power Stabilized”, proceed.

   If not working, use Clamp Cable: Connect the clamps from the EPA directly to the battery terminals (Red to [+], Black to [-]].

3. Wait: Allow 30 seconds for the EPA to stabilize power. Start procedure: Follow on-screen instructions

4. Replace Battery: It is now safe to remove both the negative (-) and positive (+) terminals and replace the battery.

5. Reconnect: Attach the positive (+) terminal first, then the negative (-) terminal to the new battery.

6. Disconnect EPA: Unplug the EPA. All vehicle settings and memories are preserved.

3. Parasitic Amp Draw Check

Measures the current Amp draw and determine abnormal current leak when the car is off.

Procedure

1. Prepare Vehicle: Ensure ignition is OFF, and all doors, trunk, and hood are closed. Wait 5 minutes for modules to sleep.

2. Connect to Car:

   First, try via OBD2: Plug the cable into the DLC car port. If the EPA screen shows “Power Stabilized”, proceed.

   If not working, use CLAMP CABLES: Connect the clamps from the EPA directly to the battery terminals (Red to [+], Black to [-]].

3. Wait: Allow 30 seconds for the EPA to stabilize power. Start procedure: Follow on-screen instructions

4. Select Mode: On the EPA, choose “Parasitic Draw Test.”

5. Follow on-screen instructions until count down setup (60min – 1 min), 15 minutes is usually sufficient.

6. Disconnect Battery: Remove the negative (-) terminal from the battery while the Clamp Cable still tightly attaches to the terminal cable.

7. Read Result: The EPA will show the amp draw. This result appears after the test is done.

   PASS : Draw is ≤ 0.06A (Normal)

   FAIL  : Draw is ≥ 0.07A (Excessive Drain)

8. Disconnect Safely:

   First, reconnect the negative (-) cable to the battery terminal. Tie it tightly and securely.

   Then, unplug the EPA from the circuit

Feature Specification

Internal Battery                                         12V 2000mAh Li-ion, rechargeable

Battery Compatibility                                 Lead-Acid, AGM, Gel, LiFePO4

Voltage Range                                          6V – 15V (12V system supported)

Parasitic Drain Detection Range              0.01A – 4.0A Auto-ranging

Memory Saver Interface                           OBD2 (J1962 DLC connector)

Backup Power Options                             Clamp Cable for External 12V Battery, AC/DC Adapter

Display                                                         High-contrast LCD size of 60mm x 46mm with warning prompts

Operating Temperature                             0ºC (32°F) ~ 50ºC (122°F)

Cable Length                                             1000mm with OBD2 socket   

Weight                                                        Approx. 300g without internal battery

Safety                                                         Reverse polarity protected. 

Working Humidity                                       10% ~ 80 %

Frequently Asked Questions (FAQ)

Q1: What makes the EPA different from other battery testers on the market?

A: The EPA is the only 3-in-1 diagnostic tool designed for modern vehicles. It combines an Advanced Battery Tester, a Parasitic Drain Finder, and an ECU Memory Saver into one device. Unlike basic testers or Bluetooth dongles, it requires no apps, avoids Bluetooth SIG compliance issues, and provides professional-grade results instantly with a PASS/FAIL outcome.

Q2: The OBD2 port doesn't work for the Memory Saver on my car. What do I do?

A: This is common in most vehicles built after 2010. Their OBD2 ports are managed by a gateway computer that cuts power, preventing simple memory savers from working. This is exactly why the EPA includes a DLC Clamp Cable. Simply plug the OBD2 end into the EPA and clamp the other end directly to your battery's positive (+) and negative (-) terminals. This bypasses the vehicle's computer system and guarantees 100% compatibility to keep your ECU, radio, and settings safe during a battery change.

Q3: How do I use the OBDF Clamp Cable?

A: Using the clamp cable is easy and ensures universal compatibility:

1. Plug the OBDF clamp cable connector into the OBD2 OUTPUT port on your EPA.

2. Connect the RED clamp to the battery's positive (+) terminal.

3. Connect the BLACK clamp to the battery's negative (-) terminal or a clean metal ground.

4. Proceed with your battery replacement. The EPA will maintain stable power for all vehicle electronics.

Q4: The EPA found a parasitic drain (FAIL), but how do I find what's causing it?

A: The EPA identifies that a drain exists. To find the source, use a process of elimination:

1. Note the amp reading from the EPA (e.g., 0.45A).

2. With the EPA still connected, start pulling fuses one by one from the vehicle's interior and engine bay fuse boxes.

3. Watch the EPA's display. When the amp reading drops significantly (e.g., from 0.45A to 0.03A), the last fuse you pulled is for the circuit causing the drain.

4. Common culprits are aftermarket accessories (radar detectors, stereos), trunk lights, or faulty control modules.

Q5: Can the EPA test Lithium (LiFePO4) and AGM batteries?

A: Absolutely. The EPA is engineered to test all common 12V battery types, including Lead-Acid, AGM, Gel, and Lithium (LiFePO4). It uses advanced algorithms to provide accurate health assessments and cranking analyses tailored to each battery's specific chemistry, giving you a reliable PASS/FAIL result.