OLLGEN 3M/10ft OBD II Vehicle ECU Emergency Power Supply Cable Memory Saver with Alligator Clip-On 12V Car Battery Cigarette Lighter Power Socket Extension Cable

This thing really works I had to change my car battery this year 10/2023 and Use the OB2 Memory Changer it Cap my Factory settings Intact I used it with a small 3amp battery. And it gave me enough time to change With a new battery So I give it 5 stars. The price was Perfect 14.99, I will able to help my brother's in the Lord or my family members. The small Motorcycle battery cost $9.99 on sale on Amazon and I keep charging with a Trickle charger so it Stay in a good state.

I was able to use this product and only needed a small 12 volt battery for it to work properly!

This device worked perfectly for our 2006 Mercedes E350 4matic. Simply connected it to the battery on our 2020 Honda Civic, connected the OBD2 to the Mercedes, and did my battery swap. No lost memory!

The plug and the socket don’t make a good connection, you have to press them together hard and secure them together. I tried to communicate this to the vendor, but they haven’t responded to me about any solution. It’s built very well, but has this bad flaw that would negate the advantages of trying to prevent memory loss. I’m going to press the plug and socket together, then duct tape them securely.

It did the job. I had to change my battery. So in order to not lose all my memory in my car I had to use a friend’s car battery to hook it up.