LeFix 2 Pins 2 Wires BIOS CMOS Battery
4.6Editor score
Standard MOLEX 51021 connector
Compatible with Dell and HP laptops
High quality Japanese battery cells
In this guide
When your computer fails to remember BIOS settings, a dead CMOS battery is often the culprit. These small coin cells keep your motherboard clock and configuration alive when the system is powered down.
We evaluated ten top-rated options focusing on voltage stability, shelf life, and connector compatibility. Our list includes both standard CR2032 cells and specialized batteries with wire leads for direct motherboard integration.
Each pick highlights key specs like voltage, capacity, and safety features. Prices fluctuate frequently so please check current listings before purchasing to ensure you get the best value for your specific needs.
Top 3 Picks for Best Cmos Batteries for Motherboards
Duracell 2032 Lithium Battery 8 Count
4.8Editor score
Compatible with AirTag and key fobs
Bitter taste coating for child safety
Superior longevity compared to competitors
Panasonic CR2032 3.0 Volt Long Lasting
4.7Editor score
Up to eight years storage life
Works in extreme temperatures
Standards based child resistant packaging
Top 10 Best Cmos Batteries for Motherboards in 2026 Compared
This side by side comparison breaks down every product specification to help you find the perfect power source for your motherboard or compatible device.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Duracell 2032 8 Count
Voltage 3 Volt
Count 8 Batteries
Type Lithium Coin
Safety Child Resistant
4.8Editor score
Editor's Choice
LeFix 2 Pins 2 Wires
Connector MOLEX 51021
Wires 2 Pin
Polarity Regular
Compatibility Dell HP ASUS
4.6Editor score
Best Premium
3V 2032 CMOS Battery 5Pack
Capacity 240mAh
Diameter 20.5mm
Connector MX51021
Pack Count 5
4.5Editor score
Duracell 2032 4 Count
Voltage 3 Volt
Count 4 Batteries
Type Lithium Coin
Safety Child Resistant
4.8Editor score
Amazon Basics CR2032 4 Pack
Voltage 3 Volt
Count 4 Batteries
Type Lithium Coin
Label Engraved Model
4.7Editor score
Duracell 2032 2 Count
Voltage 3 Volt
Count 2 Batteries
Type Lithium Coin
Safety Child Resistant
4.8Editor score
Panasonic CR2032 10 Pack
Voltage 3 Volt
Count 10 Batteries
Type Lithium Coin
Storage 8 Years
4.7Editor score
Duracell DL2032B2 2 Pack
Voltage 3 Volt
Count 2 Batteries
Type Lithium Coin
Series DL2032B2
4.7Editor score
Maxell CR2032 5 Pack
Voltage 3 Volt
Count 5 Batteries
Capacity 235mAh
Type Lithium Coin
4.6Editor score
Maxell Micro Lithium CR2032
Voltage 3 Volt
Count 5 Batteries
Capacity 90mAh
Made In Japan
4.6Editor score
1. Duracell 2032 Lithium Battery 8 Count – Best Overall Cmos Batteries for Motherboards
Duracell 2032 Lithium Battery 8 Count
Voltage 3.0 Volts
Capacity Standard Lithium
Battery Count 8 Units
Safety Bitter Taste Coated
This eight pack of Duracell CR2032 batteries stands out as the most versatile option for general motherboard replacement. With a 4.8 rating users appreciate the consistent 3.0 volt output essential for maintaining BIOS settings without fluctuation.
Pros
- Highly reliable brand reputation
- Child safe packaging included
- Works with many device types
- Long shelf life guaranteed
- Easy to find locally
Cons
- Premium pricing compared to generics
- Not specific for wire leads
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Duracell ensures superior longevity that exceeds competitor claims based on ANSI household tests. The bitter taste coating on both sides provides critical safety for households with young children who might ingest small cells.
While the price is slightly higher than generic alternatives the quality assurance and precise manufacturing specifications justify the cost. You gain peace of mind knowing the battery meets strict material and workmanship guarantees.
Buy this if you need a reliable stock of batteries for multiple devices including key fobs and medical tools alongside your motherboard. It is the safest and most dependable choice for everyday use.
Extended Device Compatibility
Beyond motherboards these batteries power AirTags, car key fobs from major brands, fitness trackers, and tire pressure sensors ensuring you get full value from every cell.
Safety First Packaging
The child safe packaging adds an extra layer of protection making it safer to store these small lithium cells in homes with curious toddlers or pets.
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2. LeFix 2 Pins 2 Wires – Best Budget Cmos Batteries for Motherboards
LeFix 2 Pins 2 Wires BIOS CMOS Battery
Connector MOLEX 51021
Wire Count 2 Pins
Pitch 1.25mm
Polarity Red Positive
For laptop owners needing a direct replacement with wire leads this LeFix battery is a standout budget choice. The inclusion of a standard MOLEX connector makes installation straightforward for Dell, HP, and ASUS devices.
Pros
- Affordable replacement option
- Includes standard connector wires
- Anti-static packaging included
- Tested before shipping
- Compatible with specific laptop models
Cons
- Requires manual connector check
- Limited to specific brands
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Manufactured by a Japanese battery giant the cell quality is surprisingly high for the price point. The anti-static packaging ensures the battery arrives undamaged while each unit undergoes testing prior to shipping.
Users must verify the connector polarity against the product images to avoid installation errors. The red positive and black negative wires are standard but checking the specific pin layout on your motherboard is essential.
Choose this if your motherboard uses a wire connected battery rather than a simple clip. It offers the most cost effective solution for legacy laptops or specialized industrial boards needing exact connectivity.
Exact Laptop Compatibility
Designed specifically for models like Dell D830 and HP CQ41 this battery plugs directly into existing sockets without requiring additional adapters or complex modifications.
Professional Packaging
The anti-static bag protects the sensitive electronic components during transit ensuring you receive a fully functional battery ready for immediate installation.
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3. 3V 2032 CMOS Battery 5PACK – Best Premium Cmos Batteries for Motherboards
3V 2032 CMOS Battery with Wire Leads 5PACK
Capacity 240mAh
Connector CR2032 MX51021
Dimensions 20.5mm Diameter
No Charging Allowed
This five pack offers a higher capacity of 240mAh compared to standard CR2032 cells providing longer service life for demanding motherboard environments. The included MOLEX connector matches many specific laptop models directly.
Pros
- Large capacity 240mAh
- Bulk pack of 5 units
- Compatible with many Dell laptops
- Excellent cycle life
- Clear voltage specifications
Cons
- Dangerous to charge
- Requires careful storage
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The long cycle life ensures reliable performance even in systems that require frequent power cycles. Users can store the batteries in a cool dry place maintaining optimal voltage for years before installation.
Safety is critical as these batteries cannot be charged and swallowing poses serious risks. The product data explicitly warns to keep them away from children and store them at forty to sixty percent charge if unused.
Select this pack if you maintain multiple systems needing wire lead replacements. The extra capacity and bulk pricing make it a premium choice for IT professionals or advanced enthusiasts managing fleets of machines.
High Capacity Performance
The 240mAh capacity exceeds typical coin cell ratings offering extended uptime for BIOS memory retention in servers or high performance workstations.
Broad Model Support
Compatibility lists cover Dell M11x and E6520 series ensuring you find a direct fit for older gaming laptops and business workstations needing replacement.
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4. Duracell 2032 Lithium Battery 4 Count – Reliable Cmos Batteries for Motherboards
Duracell 2032 Lithium Battery 4 Count
Voltage 3.0 Volts
Count 4 Batteries
Child Resistant Packaging
Longevity Tested
This four pack provides a balanced option for users needing a smaller quantity of high quality CR2032 batteries. The 4.8 rating reflects customer satisfaction with performance across watches and motherboard backup systems.
Pros
- Trusted Duracell quality
- Four pack convenience
- Child safe features
- Widely available globally
- Consistent performance
Cons
- No connector included
- Higher unit cost
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Every battery undergoes precise manufacturing to meet strict specifications guaranteeing quality assurance. The bitter taste coating helps keep children safe by deterring accidental ingestion in household environments.
While not as cost effective per unit as larger packs the four count is ideal for replacing a single motherboard battery and keeping spares on hand. It avoids waste without sacrificing reliability.
Purchase this when you need immediate replacements and a small backup supply. It is a safe and dependable choice for standard coin cell sockets found in desktop motherboards.
Precise Manufacturing
Each battery is crafted to exact voltage tolerances ensuring stable power delivery that prevents BIOS reset errors during system standby.
Home Safety Priority
The child resistant packaging and bitter coating are key features for families wanting to keep small electronics powered without safety risks.
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5. Amazon Basics CR2032 4 Pack – Practical Cmos Batteries for Motherboards
Amazon Basics CR2032 4 Pack
Voltage 3.0 Volts
Non-Coated Surface
Count 4 Batteries
Replaces BR2032
Amazon Basics offers a straightforward solution for CR2032 needs with a four pack that meets standard voltage requirements. The 4.7 rating indicates reliable performance for everyday electronics and motherboard backups.
Pros
- Competitive pricing
- Child proof package
- Easy model identification
- Imported quality control
- Compatible with many devices
Cons
- Non-coated surface
- No extended warranty
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The non-coated surface allows for easy identification of the model number engraved on the battery. This helps avoid installation mistakes when replacing old cells in tight motherboard sockets.
While lacking the bitter taste coating found in premium brands the child proof packaging still provides a baseline level of safety. It is a practical choice for users familiar with electronics safety.
Opt for this pack if you need a cost effective supply of batteries for general use. It works well for motherboards and offers the convenience of trusted Amazon quality control.
Easy Identification
Engraved model numbers on each cell allow quick verification before installation saving time during motherboard maintenance tasks.
Child Proof Design
The packaging meets safety standards to prevent easy access by children while still allowing adult users to open it without tools.
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6. Duracell 2032 Lithium Battery 2 Count – Compact Cmos Batteries for Motherboards
Duracell 2032 Lithium Battery 2 Count
Voltage 3.0 Volts
Count 2 Batteries
Compact Pack Size
Child Resistant Features
For users needing a quick single replacement with a spare this two count pack delivers premium Duracell performance in a compact form. The 4.8 rating ensures confidence in the battery stability.
Pros
- Small convenient pack
- Trusted brand quality
- High customer rating
- Easy to store
- Safety features included
Cons
- Limited quantity per pack
- Higher price per cell
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The bitter taste coating and child safe packaging provide essential protection for homes. Despite the small size the batteries offer the same longevity and quality assurance as larger packs.
This pack is ideal for emergency repairs when you need to replace a dead BIOS battery immediately without waiting for larger shipments. It balances availability with reliability effectively.
Choose this if you need a fast solution for a single motherboard. It keeps your system running without the commitment of bulk buying or higher costs of larger boxes.
Emergency Readiness
Keeping a two pack on hand ensures you can quickly resolve BIOS reset issues without delaying critical system maintenance or upgrades.
Quality Assurance
Every cell is guaranteed against defects ensuring that even small packs meet the strict standards expected from the Duracell brand.
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7. Panasonic CR2032 3.0 Volt Long Lasting – Durable Cmos Batteries for Motherboards
Panasonic CR2032 3.0 Volt Long Lasting
Voltage 3.0 Volts
Count 10 Batteries
Eight Year Shelf Life
Wide Temp Range
This ten pack of Panasonic CR2032 batteries offers exceptional value for bulk buyers needing reliable power for multiple devices. The battery4.7 rating reflects consistent quality and long lasting performance.
Pros
- Extended storage life
- Extreme temp resistance
- Bulk pack savings
- IEC compliant packaging
- Made by Panasonic
Cons
- No wire connector
- Larger box footprint
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Panasonic engineers these cells for up to eight years of storage life which is ideal for stocking server rooms. They remain stable in extreme temperatures ranging from fourteen to one hundred forty degrees Fahrenheit.
The standards based packaging meets strict safety regulations for child resistance ensuring safe transport and storage. This compliance is crucial for IT departments managing inventory across multiple locations.
Select this pack for long term storage or large scale deployments. The durability and shelf life make it a top choice for professional environments needing dependable power sources.
Extended Storage Stability
Retain power for up to eight years when properly stored ensuring you can rely on spares even after long periods on the shelf.
Extreme Environment Use
The wide operating temperature range makes these batteries suitable for industrial setups or outdoor equipment where standard cells might fail.
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8. Duracell DL2032B2 2 Pack – Verified Cmos Batteries for Motherboards
Duracell DL2032B2 2 Pack
Voltage 3.0 Volts
Count 2 Batteries
Series DL2032B2
Lithium Coin Cell
This two pack provides a standard CR2032 solution for motherboard users seeking verified quality. The 4.7 rating suggests consistent performance similar to other Duracell coin cell options.
Pros
- Standard 3V output
- Two pack convenience
- Reputable brand
- Compact design
- Reliable chemistry
Cons
- Limited info available
- No special features
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While specific details are minimal the DL2032B2 designation confirms it meets standard 3.0 volt lithium specifications. It is designed for general purpose use in devices requiring reliable small cell power.
The pack size is convenient for keeping a spare alongside your main system battery. It fits the needs of users who prefer trusted brands over generic alternatives.
Use this for standard socket replacements where bulk buying isn't necessary. It offers the reliability of Duracell in a small and manageable package.
Standard Specifications
The DL2032B2 series guarantees standard voltage and dimensions ensuring compatibility with virtually any CR2032 socket on modern motherboards.
Compact Storage
The small two pack size allows you to keep a battery in your toolbox without taking up significant space or weight.
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9. Maxell CR2032 5 Pack – Standard Cmos Batteries for Motherboards
Maxell CR2032 lithium batteries 5 Pack
Voltage 3.0 Volts
Count 5 Batteries
Capacity 235mAh
Lithium Coin Type
This five pack delivers a practical quantity of CR2032 batteries at a reasonable price. The 4.6 rating highlights their suitability for general electronics and motherboard backup tasks.
Pros
- Five unit value
- 235mAh capacity
- Standard 3 volt
- Guaranteed replacement
- Electronic device ready
Cons
- Older packaging style
- Capacity lower than others
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With a capacity of 235mAh these cells provide standard energy storage for maintaining BIOS settings. The guarantee offers extra peace of mind for users buying in bulk.
While the capacity is slightly lower than premium 240mAh options it remains sufficient for most consumer motherboard requirements. The focus is on reliable voltage delivery over extended duration.
Buy this for routine replacements or device farms needing multiple batteries. It is a standard reliable option that balances cost and performance effectively for everyday users.
Guaranteed Replacement
The repair or replace guarantee provides confidence in the purchase ensuring you can seek support if the battery fails prematurely.
Standard Capacity
At 235mAh these batteries meet the typical requirements for CMOS memory retention without excess cost for unused capacity.
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10. Maxell Micro Lithium Cell CR2032 – Value Cmos Batteries for Motherboards
Maxell Micro Lithium Cell CR2032
Voltage 3.0 Volts
Count 5 Batteries
Made in Japan
90mAh Capacity
This five pack offers a Japanese made alternative for CR2032 needs ensuring high manufacturing standards. The 4.6 rating reflects satisfaction with the build quality and fit.
Pros
- Made in Japan
- Five unit pack
- High quality materials
- Standard dimensions
- Fresh dates available
Cons
- Lower capacity 90mAh
- Date verification needed
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New batteries with fresh expiration dates ensure you receive a product ready for immediate use. The manufacturing location in Japan often signals better quality control and consistency.
The capacity is noted as 90mAh which is lower than typical coin cells but may still function for specific low power motherboards. Verify your system requirements before purchase to ensure compatibility.
Use this for devices needing compact lithium power where standard capacity is not critical. It is a solid choice for those prioritizing Japanese engineering quality.
Japanese Manufacturing
Production in Japan often guarantees tighter tolerances and higher quality raw materials compared to mass production in other regions.
Fresh Expiration Dates
Checking the expiration date on the package ensures you receive batteries with full lifespan remaining for your motherboard projects.
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Buying Guide – How to Choose the Best Cmos Batteries for Motherboards
Selecting the right CMOS battery involves checking voltage, connector type, and brand reliability to ensure your system retains settings correctly.
Voltage Compatibility
Ensure the battery delivers a stable 3.0 volts which is the standard for most CR2032 motherboards. Fluctuating voltage can lead to BIOS corruption or loss of hardware settings.
Always check your motherboard manual to confirm the required voltage rating before purchasing a replacement cell.
Connector Type
Desktop boards usually use a clip-in coin cell while laptops may require a battery with a wire and MOLEX connector. Verify whether you need a standalone cell or a wired replacement.
Mismatched connectors will prevent installation so measure your existing setup or consult your device documentation for details.
Capacity Ratings
Higher capacity measured in milliamp hours ensures longer service life for your motherboard settings. Look for ratings around 220mAh to 240mAh for reliable performance.
Standard 2032 cells typically fall within this range so prioritize products that specify capacity in the description.
Shelf Life
Lithium batteries can degrade over time even if unused so check expiration dates before buying. Products with longer shelf life guarantees offer better value for future use.
Store batteries in a cool dry place to maximize their longevity before installation in your system.
Brand Reliability
Established brands like Duracell and Panasonic ensure consistent voltage and safety standards. Lesser known brands may save money but risk early failure or leakage.
Investing in a trusted name reduces the risk of system instability caused by battery issues.
Safety Features
Look for child resistant packaging and bitter taste coatings to prevent accidental ingestion by children or pets. These features are crucial for home environments.
Safety standards also ensure the battery is sealed properly to prevent leakage that could damage sensitive motherboard circuits.
Pack Size Value
Buying in bulk often lowers the cost per battery so consider multi-packs if you need replacements for multiple systems. It also provides spares for future emergencies.
However balance the value against storage needs to avoid buying more than you can use within the battery's lifespan.
How to Use and Care for Your Cmos Batteries for Motherboards
Before replacing a battery always power down your system and unplug all cables to avoid electrical damage. Ground yourself by touching a metal part of the case to prevent static discharge.
Locate the coin cell on your motherboard usually near the PCIe slots. If using a wired battery gently unplug the old connector from the header before inserting the new one.
After installation boot your system and enter the BIOS to set the correct time and save settings. Verify that the changes persist after a reboot to confirm the battery is working.
Frequently Asked Questions
What happens if my CMOS battery dies?
When the battery dies your computer will lose BIOS settings and the system clock will reset. You may need to reconfigure boot order and check hardware settings.
Can I use a generic brand instead of Duracell?
Generic brands can work but often have shorter lifespans. Established brands ensure better voltage stability and safety which protects your motherboard from potential damage.
How long does a CMOS battery typically last?
A standard CR2032 battery usually lasts between three to five years in desktop systems. Usage patterns and storage conditions can shorten or extend this lifespan.
Is it safe to touch lithium batteries with bare hands?
Touching batteries with clean hands is generally safe but avoid touching the contacts. Oils from skin can cause slight corrosion over time so hold by the edges when possible.
Why does my BIOS reset every time I turn off my PC?
This indicates a dead or failing CMOS battery. Replacing it with a fresh cell should resolve the issue and restore settings retention.
Do I need a special tool to remove the battery?
No tools are usually needed as the battery is held by a clip. Gently push the clip to release the battery and lift it out for replacement.
Final Thoughts on Choosing the Best Cmos Batteries for Motherboards
We highlighted top options like the Duracell 8 Count for reliability and the LeFix wired battery for specific laptop replacements. Each pick balances performance and safety for different needs.
Prioritize voltage stability and connector fit over price to ensure your system retains BIOS settings correctly. Quality brands minimize the risk of leakage and early failure.
Always verify current listings before purchasing as product specs and availability change frequently. This ensures you get the exact battery your system requires for optimal performance.