March 31, 2026
10 Best Memory Saver For Car Battery of 2026
Last Updated - March 31, 2026
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VSTM
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VSTM OBD II Vehicle ECU Emergency Power Supply Cable Memory Saver (3Meter) with Alligator Clip-On 12V Car Battery Cigarette Lighter Power Extension Socket
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Why We Love It
- Compared by most of OBD metal pins in market with zinc plating, ours are gold plating. Better reliable on contact and electric transmission. Compared by most of OBD II Memory Saver (or Automotive Computer Memory Saver) in market with 3 ~ 5 ft in cable length, ours with super long 10 ft (3meters) cable. In this way, you can change your car battery, also by get the alternative 12V power source from another car, when you not have a jump starter on hand
- About Overload Protection: This product is built with an 8A fast-blow fuse. When the input current exceeds 8A or the voltage exceeds 14V, the fuse will blow within 0.1 seconds to cut off the circuit, protecting the wire and vehicle ECU. Powered by any jump starter with a 12V outlet into an OBD II Memory Saver. Interface connector between a 12V DC power source and vehicle's OBD II port. Preserves vehicle codes and electronic presets. Replacing a car battery on older vehicles used to be simple!! You unhook the old battery and install the new one.
- Late-model vehicles, however, rely on computers that operate everything from the stereo to the transmission. If power is lost to the computer, the settings are lost and have to reset to default. That means the vehicle may feel different when driven, and you may have to enter a security code to access the stereo.
- Using this simple memory saving device when replacing your car battery will help you avoid these problems. This device can work with any 12V DC power source, including jump starter, DC 12V Lead-acid battery, or another cars DC 12V power outlet.
- As our device with 3 meter cable, it will be a convenient way, should you not have jump starter (or Lead-acid battery) on hand, and the device can also get the 12v power supply from cigarette lighter of another good car. Just insert the Cigarette lighter plug to this car and insert into 16 pin plug to the OBD port of the car you want to replace battery. You can replace the battery.
- The OBD II Vehicle ECU Emergency Power Supply Cable Memory Saver features exceptional wire safety with its 6AWG pure copper construction. This high-quality wiring delivers current-carrying capacity that far surpasses the product's normal operating current range of 1-5A, while easily withstanding instantaneous current fluctuations up to 15A. This robust design effectively prevents wire melting caused by overload, ensuring reliable and safe power transmission to protect your vehicle's electronic systems during battery replacement.
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EZRED
EZRED MS4000 Automotive Memory Saver With Built In Charger , Black
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Main Highlights
- 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.
- 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.
- 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.
- 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!
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Clore Automotive
Clore Automotive SOLAR ESA30 OBD II Memory Saver Connector
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Main Highlights
- Memory Saver Connector
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allsun
All-Sun GK504 Automotive Setting Keeper Auto Vehicle Computer Memory Saver, 1 Pack
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Main Highlights
- Ruggedly designed hard plastic body
- Offering a convenient, easy way to save memory data of on-board computers
- Featuring convenient ability to plug into any vehicle cigarette lighter
- Includes a rugged cable designed for durability
- Requires 9-volt Alkaline battery (not included)
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MR CARTOOL
E60 OBD II Vehicle ECU Emergency Power Supply Cable 12V Car Memory Saver with 2 Alligator Clip&Battery Box
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Main Highlights
- Designed for use during car battery replacement. When replacing the car battery, connect the alternative battery and car OBD2 port with this E60 ECU emergency power cable. To protect the car's ECU data.
- [What are the Advantages of the E60?] Unique design that has 2 methods to get power. Get power from a 12V battery with the clip connector, or connect to the battery box (8 AA batteries are required, batteries are not included). You don't need a cigarette lighter connected to your vehicle to power it for use.
- [Package Includes] an emergency power cord clip, a battery box (battery not included) Power can be supplied from any 12V DC source, such as via a jump starter, a 12V lead acid battery, or a 12V DC battery from another car, etc. The total length of the entire device is 64cm / 25.19 inches.
- MR CARTOOL E60 OBD2 memory saver cables are compatible with a wide range of vehicles equipped with an OBD2 port. This makes them a versatile tool for various car makes and models. Additionally, they are a cost-effective solution compared to more complex memory retention devices.
- Note: The E60 can only be used as an emergency power supply for car battery replacement and cannot be used to power car computers for a long time. Please replace and install a new car battery as soon as possible. Normally, the E60 equipped with 8 batteries can replace more than 10 vehicles.
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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
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Main Highlights
- 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.
- Preserve Vehicle Settings During Battery ReplacementWhen 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.
- Compatible with All 12V Vehicles, with 2 Battery ClipsAutel 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 ProtectionThis 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 ProceduresOnly 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.
- LED Indicator LightThe 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.
- Surge Protection, 1-Year Warra-ntyThis 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.
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JEUCLEL
JEUCLEL USB Powered Vehicle OBD II Connector Memory Saver with Buzzer, Car ECU Emergency Power Supply Cable, Automotive Battery Replacement/Disconnect Tool, Save Settings During Battery Removal
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Main Highlights
- Memory Saver Protect memory during car battery change, prevent reset settings, such as car dashboard information, digital clock, stereo, memory seats, ABS, etc.
- Danger of Power Outage Replacing the car battery when there is no backup power supply may not only lose various memories of the car, but may also cause display abnormalities. In addition, the restoration may require readjustment at the dealer. With this tool, you don't have to worry about that.
- USB Powered The memory protector works with USB power supply. Only a USB mobile power supply with sufficient power is needed to perfectly complete the task of replacing the battery. Compared with similar products that use alligator clips to connect to the backup power supply, it is more stable, more convenient, and greatly reduces the difficulty of operation.
- Indicators and BuzzerThe new version of the memory retention period has 3 indicators and 1 buzzer, which can give warnings in many situations. Memory Saver operates in the cab, and battery replacement must be done in front of the vehicle. The buzzer will remind you when the USB power is low, so you can concentrate on your work.
- Quality This tool is made of new PVC material, eco-friendly material, non-toxic and tasteless. High quality can be guaranteed and a longer service life can be ensured.
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Bosch
Bosch 3926 BAT 35 Vehicle Computer Memory Saver
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Main Highlights
- The Bosch BAT 35 Vehicle Memory Saver is a battery and electrical system service tool that "keeps alive" vehicle electronics memory based systems - clock, radio, seat memory, and comfort systems when performing battery replacement services
- BAT 35 is designed to maintain the memory of the on-board vehicle computer to prevent losing memory settings when you disconnect a battery, saving you from tedious and extensive reprogramming when a new battery is installed
- Tool includes a long life 12V, 7 amp hour sealed lead acid sealed battery and a built-in OBD II cable for vehicle power supply while vehicle battery is disconnected
- Six LED indicator lights, three for charging functions and three for power storage conditions for ease of use
- Kit includes: BAT 35 Vehicle memory saver unit, 12V AC/DC charger, 12V Auxillary power cable ( plug and cord), OBD II cable (mounted internally to BAT 35 unit), User manual
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AUTOOL
AUTOOL OBD II Car Memory Saver Cable 12V Vehicle ECU Emergency Power Supply Cable Digital Display OBD II Battery Leakage Detective Kit with 3A Fuse & 2 Alligator Clips
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Main Highlights
- voltage current displayAUTOOL car battery change memory works with any 12V DC power source, including a running starter, DC 12V lead-acid battery, or other automotive DC 12V power outlet. It displays both voltage and current, red for voltage and blue for current.
- Leakage DetectionConnect the protector to the full spare battery and vehicle OBD port, the screen will display current and voltage data. Unplug the fuses in the car fuse box one by one, if the current suddenly becomes low, it proves that this fuse may have leakage. Then compare the car circuit diagram, find the circuit or electrical appliance connected to this fuse, you can find out the leakage situation.
- Protection Function3 amp fuse built into the memory saver, better reliable on overload protection. Detection of abnormal battery voltage and current sends an alert and the screen flashes. Current clamp anti-reverse connection protection, reverse connection after the digital tube does not light, not power.
- Car Memory SaverProtect the vehicle, when replacing the car battery, it can be used to supply power to the vehicle ECU and prevent the vehicle ECU data from being lost. Note: In the process of replacing the battery, the whole process to ensure that the vehicle power off, no electrical work, to avoid generating instantaneous excessive current.
- Note: When connecting the BT30 to the vehicle's OBD port, the vehicle's main battery must be disconnected for power to be supplied.
- Three Years WarrantyFor any quality problems. If BT30 has any defect, we will provide new replacement or solutions for our customers until satisfaction without delay, and provides lifetime technical support. For any needs, you are warmly welcomed to contact us and we will get back to you ASAP within 24 hours.
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Apopip
Memory Saver for Car Battery On-Board Computers, OBD11 | C'ode 12 Volt Attaches to Power Van/Truck/PortCar
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Main Highlights
- Saves all drive-ability codes and settings changing a vehicle's starter battery.
- It also protects codes and settings for clocks, key less entry systems, and so on.
- Plugs into vehicle's 12 volt power receptacle.
- This is the best way to change out your vehicles battery. All learned data is saved. Saves memory in you vehicle.
- Just make sure the 9V battery is new, turn off your door lamp and other lighting system inside your car to off, attach this item to a 9V battery, insert it into cig receptacle, turn the ignition and your ready to replace your battery. Finished in 15 minutes.