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💾 enhance performance & preserve data with powerbuilt 648539 computer memory keeper logo

💾 Enhance Performance & Preserve Data with Powerbuilt 648539 Computer Memory Keeper Review

6

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Average

Revainrating 3.5 out of 5  
Rating 
3.3
🧰 Computer Internal Components, 💻 Computer Components

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Description of 💾 Enhance Performance & Preserve Data with Powerbuilt 648539 Computer Memory Keeper

For maintaining voltage continuity to engine computer, clock and radio memory when vehicle battery is disconnected. Retains radio presets, ECM codes and learned procedures up to four hours. Plugs into vehicle's cigarette lighter outlet. Maintains voltage continuity to engine computer, clock and radio memory. Retains radio presets, ECM codes and learned procedures up to four hours. Plugs into vehicle’s cigarette lighter outlet.

Reviews

Global ratings 6
  • 5
    2
  • 4
    1
  • 3
    1
  • 2
    1
  • 1
    1

Type of review

Revainrating 5 out of 5

It does not work. on Internal Components

Didn't work for me. I have read the instructions as well as most of the comments on Revain on how to do it properly. I used a brand new 9v battery and made sure the keys are turned to accessory mode and anything that can draw current is off. So that the actual battery change takes as little time as possible, I even removed the anchors from the battery beforehand. In general, replacing the old battery with a new one took less than 3 minutes. When I was done, I took a deep breath, turned on the…

Pros
  • Wide Range
Cons
  • Doubtful

Revainrating 5 out of 5

Presets not saved

2014 Subaru Forester. Radio, GPS and fan switched off. Insert a new 9v max battery which read about 9.7 volts. I disconnected the battery and then found that the wire connector on the back was corroded so I had to go to an auto parts store to get a new one. 9V probably left for 2 hours. After installing a new car battery, the radio settings disappeared. The 9V battery dropped to 8.3V. Maybe 2 hours is too long. I also saw a spark when I accidentally hit the end of the wire with a screwdriver…

Pros
  • Stylish design
Cons
  • Something's wrong

Revainrating 3 out of 5

Plan ahead before using this product

After replacing the batteries in two (2) cars about 7 weeks apart I started looking for backup storage to keep my current to supplement the system. The current system is a charger with a smooth battery current connected to the power connector plug. I thought Powerbuilt Computer Memory Keeper would be a compact alternative. The item has arrived in good condition. Tested output at 9-volt (9.03V) battery assembly and tested output voltage at 8.62V outlet adapter (approximately 65% of a fully…

Pros
  • great product
Cons
  • Something different

Revainrating 1 out of 5

Not perfect for my GX470 but certainly good enough

Just used this when changing the battery in my Lexus GX470. I plugged it in (with new 9V), turned the ignition key to accessory and replaced the car battery in about 20 minutes. My car's seat memory and radio presets were saved, which were the most important elements for me. It didn't save any time on the clock and I still had to reset the auto raise/lower feature on all windows, but it was easy and quick to do. Overall, the purchase of this memory guard was worth it. SEP 2017 UPDATE: I used…

Pros
  • Looks good
Cons
  • Updates

Revainrating 4 out of 5

This cheap tool saved my fuel trim settings!

Keeping the VE/Fuel tables in the ECU is important for performance and fuel efficiency when changing batteries. When changing the battery on my 98 Ranger, I was able to test the performance of this inexpensive tool. My check engine light is on at this time. The test is designed to confirm that the 9 volt battery (non-alkaline) can maintain ECU health when the main power supply is removed. Checked whether the CE indicator remained after battery replacement. To be honest I was impressed that this

Pros
  • This is great
Cons
  • Long delivery time

Revainrating 2 out of 5

It really worked! - Computers and Accessories

To be honest I didn't think this $8 device would work. I disconnected the old battery and replaced it with a new battery. I noticed that after connecting the new battery, I forgot to put the battery case back on the battery. After disconnecting the new battery, replacing the battery tray on the battery, and reconnecting the new battery, I was pretty sure my radio settings and most importantly my car starter should all be reset. To my surprise, neither the radio settings nor, more importantly…

Pros
  • Excellent Overall
Cons
  • Other