OBD2 Car Battery Memory Keeper – ECU Power Off Protector

Never Lose Your Car's ECU Settings Again

Changing your car battery doesn't have to mean losing all your vehicle's saved settings. The Aermotor OBD2 Car Battery Memory Keeper is an essential tool for any DIY mechanic or car owner. By plugging directly into your car's OBD2 port and supplying a steady 12V backup power, it keeps your ECU (Engine Control Unit) and all computer memories intact throughout the entire battery swap process — no dealer reset required.

Compatible with all vehicles made after 1996 equipped with an OBD2 socket, this clip-on protector is a simple, smart solution that saves time, money, and the frustration of reconfiguring your car's systems.

Key Features

• Protects ECU Memory: Maintains saved settings including dashboard info, digital clock, audio presets, memory seats, ABS calibration, anti-skid system, and electric mirror positions.
• Direct OBD2 Connection: Plugs straight into your car's OBD2 diagnostic port for a secure, reliable backup power supply during battery changes.
• 12V Battery Clip-On: Red and black battery terminal clips connect to an external 12V power source to maintain continuous power to the car's computer.
• Visual & Audio Confirmation: Red indicator light confirms power is active; an audible beep confirms successful OBD2 connection — so you always know it's working.
• Universal Fit (Post-1996 Vehicles): Designed for all OBD2-compatible cars, giving it broad compatibility across makes and models.
• Saves Time & Improves Efficiency: Skip the dealership reset visit — swap your battery with confidence in your own driveway.

⚠️ Important Instructions & Safety Notes

1. Polarity matters: Always connect the RED clip to the RED (+) terminal and the BLACK clip to the BLACK (–) terminal. Reversing the connection can damage your vehicle's computer.
2. Wait for the red indicator light to illuminate before inserting the OBD2 plug into your car's port.
3. A confirmation beep will sound once the OBD2 plug is properly connected.
4. Do NOT turn on lights or any other electrical devices while the protector is in use.
5. Do NOT allow the positive terminal clip to touch any metal surface — this can blow the OBD socket fuse.
6. After installing the new battery, loosen the red clip first. If the beep stops, the replacement was successful. If the beep continues, the fuse may need to be checked.

Made in Mainland China.

Specifications

• Brand: Aermotor
• Compatibility: All OBD2 vehicles (1996 and newer)
• Power Supply: 12V external battery (not included)
• Connection Type: OBD2 port + battery terminal clips (red/black)
• Indicator: Red LED light + audible confirmation beep
• High-Concern Chemicals: None
• Battery Included: No

Related Products You May Like

• 100-Pack Disposable Nitrile Gloves – Latex-Free, White, Oil-Proof — keep your hands clean during battery changes
• 120ml Heavy-Duty Metal Rust Remover & Anti-Rust Spray — protect your battery terminals from corrosion

For more information on OBD2 diagnostics and vehicle systems, visit the U.S. Consumer Product Safety Commission (CPSC) for general consumer product safety guidance.

Learn more: Pico Technology

Frequently Asked Questions

Q: What vehicles are compatible with this OBD2 car battery memory keeper?

A: This device is compatible with virtually all cars, trucks, and SUVs manufactured after 1996 that are equipped with a standard OBD2 diagnostic port. This covers the vast majority of modern vehicles on the road today.

Q: What power source do I need to use with this ECU memory protector?

A: You will need an external 12V battery (not included) such as a portable jump starter or a secondary 12V car battery. Connect the red clip to the positive (+) terminal and the black clip to the negative (–) terminal of your external 12V power source.

Q: Will this device really protect all of my car's computer settings during a battery swap?

A: Yes. When properly connected via the OBD2 port with a 12V backup power source, this protector maintains continuous power to your vehicle's ECU and onboard systems — preserving settings like clock time, radio presets, memory seats, ABS calibration, anti-skid system data, and electric mirror positions throughout the battery change.

Q: What happens if I accidentally reverse the red and black clips?

A: Incorrect polarity (reversing the clips) can cause serious damage to your car's onboard computer. Always double-check that the RED clip connects to the RED/positive terminal and the BLACK clip connects to the BLACK/negative terminal before proceeding.