EZREDMS4000 Automotive Memory Saver With Built In Charger , Black

I used this unit to replace the battery on two of my cars. It worked as advertised and I did not loose any programming and all the features were retained. It is simple and easy to use and the instructions are easy to follow.

I wished I knew about this charger sooner. I did everything as noted when changing the battery in my car. I didn't lose any memory and it worked perfectly.

Simply charge this and then plug it in to save the memory of the vehicle you are putting a battery in. Very basic light comes to tell you it is plugged in correctly, then just flip it on before replacing the battery. Also, if it is getting low will show up yellow which is nice.

I am almost certain this was a returned item. The box had bulged in areas indicating that it was repackaged. The top inner flaps interconnect and were loose. Finally, the battery was fully charged, which never seems to happen with a new item. Having written this, I was not sure what to expect. I connected it to the diagnostics port and changed the battery. Started the car after the battery change and the fob worked. I am not getting any odd warnings messages and the presets were saved. So, it did what it was supposed to.The only reason it does not get five stars is that I believe it was returned.

Bought for work. This comes in handy when needing to replace battery in a vehicle such as Honda/Acura

I own a 2012 Cadillac CTS4 Premium. Battery was on it's way out so I bought one of these to store my car's memory settings while changing it out. Amazon delivered the next day. I charged it overnight and in the morning I see the green light which indicates the memory saver has a full charge. Went down to NAPA to pickup my battery I had ordered online the night before. I plug the memory saver into my car's ODBC port. Should see a green light but instead I get an amber light, which indicates the battery needs to be charged. Uhmmm, I just did that. Troubleshooting indicates to reset the 4AMP circuit breaker. I can't, it doesn't move. Appears to be defective. Begin the process to do a return on Amazon but because this is a battery device I had to jump through too many hoops. Getting very frustrated at this point. Amazon's automated troubleshooting system wants me to take the BRAND NEW UNIT APART and remove / reinstall the battery inside the unit. Uhmmm, no! Brand new device. I'm not about to start taking it apart. I eventually started a chat with an Amazon CSR and request to speak with a human. She sends me a link to contact a real person. Get someone on the phone but she has a very heavy accent. I have to ask her multiple times to slow down and enunciate her words. She says I will get a full refund but it will take 7 - 10 business days (I think this is what she says). We'll see. Now I guess I will order another memory saver and postpone changing my car's battery for a few days. Screw it. I'm going to lunch with a buddy ...

Very useful in protecting the computer system in my car while I replaced the battery.

Item well described. Well done . Thank you.