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Best obd2 memory savers - April 2026

Last Updated - April 4, 2026

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

EZRED

EZRED MS4000 Automotive Memory Saver With Built In Charger , Black

EZRED

$79.41

More Details
Main highlights
- Protects & saves: This unit is protected by a 4 amp circuit breaker & can be used for anti-theft radios, clocks, keyless entry systems, alarms, cell phone settings, GPS Memory, TPMS & other memory-related functions.
- Memory saver & charger: The MS4000 saves all drive-ability codes & settings when disconnecting/changing a vehicle's starter battery. It also protects settings & codes for anti-theft radios, clocks, keyless entry systems & much more.
- Innovation at its finest: We make high quality hand tools & accessories, tool organizers, ratchet sets, LED flashlights & work lights. We specialize in tools for battery, heating & electrical work, for both the professional tradesperson and home DIY'er!
- Charges batteries: A 12 volt, 4.5 amp hour sealed lead acid battery is included inside the unit. The direct wired OBDII connector plugs directly into the vehicles OBDII port.
$79.41
2
Best Value

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Autel

2026 Autel MaxiBAS BTMS OBD2 Car Battery Tester Memory Saver, Preserve Vehicle Data Code Electronic Preset, Maintain Data Surge Protection Attaches to 12 Volt Backup Battery, Provide Power to Vehicle

Autel

$45.99

$49.99
(8% Off)

More Details
Main highlights
- ✅【Surge Protection, 1-Year Warra-nty】This Autel MaxiBAS BTMS OBDII Battery Tester Memory Saver has surge protection and has 3PCS LEDs to indicate the power status. It comes with 1-Year Warranty and 30-day Worry-Free Return and Replacement Policy. If you have any questions, you can contact us via Amazon message or via:💌auteldirect@ outlook. com💌. We are always here to ensure that you have no worries.
- ✅【Preserve Vehicle Settings During Battery Replacement】When replacing, disconnecting or removing car battery without a backup power supply, there will be many problems. Not only may the various memories of the car be lost, but it also cause display abnorm.alities. Such as Throttle corr.ection data is lost, the window one-button lifting and lowering fa.ils, the window position signal saved in the control unit is lost, and the control unit cannot deter.mine the specific position of the curr.ent glass. Our OBDII memory saver allows you to keep the power on when replacing the battery. Directly connect to the 12V backup battery without worrying about data loss.
- ✅【LED Indicator Light】The 2026 new version Autel memory preserver has 3 indicator lights.Connect the OBD socket of the tool to the OBD interface of the vehicle, and then connect the clip to the backup battery. 2 green lights will light up, indicating that the connection is successful; 3 green lights will light up, indicating that the battery voltage is greater than 10V; 3 red lights will light up, and the battery voltage is less than 10V.
- ✅【Compatible with All 12V Vehicles, with 2 Battery Clips】Autel Car battery memory saver is available for All OBDII 12V vehicles from 1996 and later. One end of this OBD II memory protector is the OBD2 standard interface, which is compatible with 99% of vehicles on the market. Another port of this OBDII data saver is two battery clips, which can be clipped to the positive and negative poles of the backup battery. The red clip is connected to the positive pole and the black clip is connected to the negative pole.
- ✅【Built-in Voltmeter, Polarity Reverse Protection】This car battery memory save features a built-in voltmeter, allowing you to quickly test the backup battery's voltage before replacing it, ensuring a safe and effective replacement process. It can also detects reverse polarity. If the polarity is reversed, the BTMS stops the flow of electrons, preventing damage to the battery and vehicle electronics.
- ✅【Battery Replacement Procedures】Only 4 steps to save memory data and change battery. Step 1: Test backup battery, all three LED light green if the battery has sufficient voltage or at least 10 volts. Step 2: Powered off the vehicle. Step 3: Plug the cable into vehicle obd2 port, two LED light green when connected successfully. Step 4: Detach, remove or replace the existing vehicle battery, Start work. Vehicle information Memory data will never be lo.st.
- ✅【2026 Autel Car Memory Saver】 2026 Autel Flagship MaxiBAS BTMS battery tester memory saver is a professional vehicle data protector. It can retain vehicle codes and electronic presets, and prev.ent information loss when the onboard com.puter is powered off. This exclusive battery clamp can be connected to a 12V backup battery to ensure that not outage when replacing battery. This professional battery tester memory protector is an indispensable product for auto repair shop, garages, mechanician. Note: For any issues experienced after purchase or need explore [additional accessory], please reach out to: 📞auteldirect@ outlook. com🛣️.
$45.99
$49.99 (8% Off)
3

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

LUTIFIX

OBD2 Car Memory Saver Cable, with 3A Fuse & 2 Alligator Clips OBD II Vehicle ECU Emergency Power Supply Cable, Over-Current, Over-Voltage, Polarity Reverse Protection

LUTIFIX

$22.99

$24.99
(8% Off)

More Details
Main highlights
- 【Voltage and current display simultaneously】BT30 memory saver for car battery management system with a core processor,displays battery voltage(preventing the use of depleted batteries, ensuring uninterrupted power for battery replacement),displays current (for leakage detection or understanding the car's static current when not in operation).
- 【Upgraded OBD2 OBD Power Cable】The OBD emergency power cable is mainly used for replacing automotive batteries and protecting automotive ECU data. LUTIFIX OBD2 Automotive Battery Replacement Tool adopts upgraded design, voltage and current display at the same time, with over-voltage protection, over-current protection and reverse polarity protection. Note:The batteries on the car can't be shared, and can't be connected to the same battery with the ECU.
- 【Tips for Best Use】During the battery replacement process,ensure the vehicle power switch remains off throughout, can't open the car doors or the lights，with no electrical appliances active. The operating voltage range of this device is 10~14V. An alarm will sound to indicate when the voltage is <10V or>14V. Power-off protection will be activated when the voltage exceeds 16V. For detailed operating steps and important notes to ensure the best experience, please refer to the included product manual.
- 【Over-voltage and over-current protection】OBD II Car Memory Saver Cable supports voltage and current display at the same time，over-current protection ，over-voltage protection and polarity reverse protection. The obd power cable includes a 3A quick blow fuse and power-off protection will be activated when voltage >16V.
- 【Leakage detection】OBD2 Automotive Battery Replacement Tool can make a preliminary diagnosis of automotive leakage, by unplugging the fuse in the automotive fuse box and observing the current situation, to determine whether the automobile is leaking. Further diagnosis requires the use of other tools, this product can only be a preliminary diagnosis.
- 【Battery Replacement Procedures】Prepare a fully-charged spare battery and securely connect the power clamp to the positive and negative terminals of the spare battery (red clamp to positive, black clamp to negative). lf connected correctly, the screen will display voltage data. Connect the device's OBD interface to the vehicle's OBD interface.Upon successful connection, the screen will display current data. Remove the old battery from the vehicle and replace it with a new one.
$22.99
$24.99 (8% Off)
4

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

LUTIFIX

OBD2 Car Memory Saver Cable, with 3A Fuse & 2 Alligator Clips OBD II Vehicle ECU Emergency Power Supply Cable, Over-Current, Over-Voltage, Polarity Reverse Protection

LUTIFIX

$24.99

More Details
Main highlights
- 【Voltage and current display simultaneously】BT30 memory saver for car battery management system with a core processor,displays battery voltage(preventing the use of depleted batteries, ensuring uninterrupted power for battery replacement),displays current (for leakage detection or understanding the car's static current when not in operation).
- 【Upgraded OBD2 OBD Power Cable】The OBD emergency power cable is mainly used for replacing automotive batteries and protecting automotive ECU data. LUTIFIX OBD2 Automotive Battery Replacement Tool adopts upgraded design, voltage and current display at the same time, with over-voltage protection, over-current protection and reverse polarity protection. Note:The batteries on the car can't be shared, and can't be connected to the same battery with the ECU.
- 【Tips for Best Use】During the battery replacement process,ensure the vehicle power switch remains off throughout, can't open the car doors or the lights，with no electrical appliances active. The operating voltage range of this device is 10~14V. An alarm will sound to indicate when the voltage is <10V or>14V. Power-off protection will be activated when the voltage exceeds 16V. For detailed operating steps and important notes to ensure the best experience, please refer to the included product manual.
- 【Over-voltage and over-current protection】OBD II Car Memory Saver Cable supports voltage and current display at the same time，over-current protection ，over-voltage protection and polarity reverse protection. The obd power cable includes a 3A quick blow fuse and power-off protection will be activated when voltage >16V.
- 【Leakage detection】OBD2 Automotive Battery Replacement Tool can make a preliminary diagnosis of automotive leakage, by unplugging the fuse in the automotive fuse box and observing the current situation, to determine whether the automobile is leaking. Further diagnosis requires the use of other tools, this product can only be a preliminary diagnosis.
- 【Battery Replacement Procedures】Prepare a fully-charged spare battery and securely connect the power clamp to the positive and negative terminals of the spare battery (red clamp to positive, black clamp to negative). lf connected correctly, the screen will display voltage data. Connect the device's OBD interface to the vehicle's OBD interface.Upon successful connection, the screen will display current data. Remove the old battery from the vehicle and replace it with a new one.
$24.99
5

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Autel

Autel OBD2 Memory Saver for Car Battery, 2026 MaxiBAS BTMS for All 12V Vehicles, Preserve ECU Code & Electronic Presets, Maintain PCM Data, Polarity Protection, Built-in Voltage Meter, LED Lights

Autel

$41.99

More Details
Main highlights
- 🥇【Better Qu.ality, Better Performance】Autel BTMS OBDII battery test saver is built with high quality material: 5.9FT long & thickened copper wire, insulation protected & strong bite alligator clips, 16 pin obd2 port for stable power supply, bright LED Indicators to know connection status visually. Autel BTMS is backed by 1 year qu.ality wa.rranty, if any questions, please reach via 📩autelusa @ outlook. com📩, we are here 7/24.
- 😀【Easy to Use, Plug & Play Design】Step 1: Prepare a 12V backup battery. Step 2: Vehicle powered off, connect the OBD2 end of BTMS to your vehicle’s port and attach the alligator clips to a 12V backup battery. Step 3: Two LEDs will light green when connected successfully. Step 4: then we can remove the existing vehicle battery and be confident that when we start the vehicle, all of those settings vital to the operation of the car still remain including the most important presets.
- 📌【Please Rea-ch Out to Us Directly】Dear valued customer, if you experience any issues with your product after purchase (received a used product), or need any support (need more accessories), plesae don't hesitate to rea-ch us via 💌autelusa @ outlook . com in the first time💌. Our dedicated team is here to help resolve any issues you may have, we will work closely with you to find the be-st re-solution.
- 👏【Compatible with All 12V Vehicles】Designed to work with a wide range of vehicles, including all 12V car: passenger cars, light trucks, pickups, SUVs etc. Whether you’re a professional mechanic or a home DIYer, this vehicle ECU emergency power supply cable is an universal solution for all vehicle maintenance that need to disconnect car from its power supply.
- 👍【OBD2 Connection for Reliable & Continuous Power】Unlike other battery memory saver with cigarette lighter, Autel Battery Saver with standard 16 pin OBD2 connection provides a stable power source to your vehicle’s systems, even during long time repair process or battery replacements, it works regardless of the vehicle’s ignition status, ensuring no data loss.
- 👌【Built-in Voltage Meter, Reverse Polarity Protection】Autel Automotive Battery Test Memory Saver comes with built-in voltage meter, it tests the backup battery to ensure it has enough voltage for the job, the meter also works to detect reverse polarity in the case that the positive clamp was mistakingly placed on the negative terminal and vice versa, when detected, the BTMS stops the flow of electrons and prevents damage to the battery and the vehicle's electronics.
- ❔【Why You Need an OBD2 Memory Saver】Afraid of data loss or systems' adaptive memory settings are wiped clean when coming across maintenance requires the detachment or removal of the battery? Autel MaxiBTMS memory saver makes thing right! All the PCM settings such as doors, sunroofs or windows, air conditioning, infotainment system will be maintained no matter how long the repair process.
- ✔️【Preserve Critical Vehicle Settings During Battery Replacement】Autel MaxiBAS BTMS OBD2 memory saver helps avoid vital electrical systems settings such as losing radio presets, ECU adaptations, steering angle calibration, and infotainment settings when replacing or disconnecting your car battery. Autel MaxiBAS BTMS car memory saver ensures all your vehicle’s memory settings remain intact, saving you time and hassle.
- ⚠️【Caution】During the battery replacement process, please don’t open the door, don’t turn on the lights, don’t start the vehicle, don’t turn on any electrical devices, don’t touch the hitch. If any device was turned on during battery replacement, it may damage your vehicle's OBD connector.
$41.99

Best obd2 memory savers - April 2026

EZRED MS4000 Automotive Memory Saver With Built In Charger , Black

2026 Autel MaxiBAS BTMS OBD2 Car Battery Tester Memory Saver, Preserve Vehicle Data Code Electronic Preset, Maintain Data Surge Protection Attaches to 12 Volt Backup Battery, Provide Power to Vehicle

OBD2 Car Memory Saver Cable, with 3A Fuse & 2 Alligator Clips OBD II Vehicle ECU Emergency Power Supply Cable, Over-Current, Over-Voltage, Polarity Reverse Protection

OBD2 Car Memory Saver Cable, with 3A Fuse & 2 Alligator Clips OBD II Vehicle ECU Emergency Power Supply Cable, Over-Current, Over-Voltage, Polarity Reverse Protection

Autel OBD2 Memory Saver for Car Battery, 2026 MaxiBAS BTMS for All 12V Vehicles, Preserve ECU Code & Electronic Presets, Maintain PCM Data, Polarity Protection, Built-in Voltage Meter, LED Lights

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