By PickSmartly Editorial Team
· Updated Aug 4, 2026
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When it comes to maintaining small, precision electronics, the reliability of your power source is non-negotiable. Dell button batteries are a specialized subset of coin-cell technology designed to provide consistent voltage to devices ranging from computer motherboards and CMOS settings to small medical devices and remote controls. Unlike standard alkaline batteries, these cells are engineered for long-term stability and low self-discharge rates. Selecting the right cell isn't just about finding a battery that fits the slot. It is about ensuring the chemical composition and discharge curve match the specific requirements of your hardware to prevent data loss or device failure.
Editor's Choice
Our Top Picks for Dell Button Batteries
The three top picks on this page — ranked by PM Score, our 0–10 measure built from the customer star rating and review volume.
POWER SPECS: Type: X284G, Capacity: 5200mAh / 56Wh, Voltage: 11.1V, Condition: 100% brand new, Battery type: 6 A+ Cells / Lithium-Ion. This battery is also a replacement battery for 4400mAh / 11.1V / 48Wh / 6 Cells. This 56Wh battery can lasts longer than 48Wh. You can use it safely and buy it with confidence at any time.
TOP QUALITY MATERIAL THAT LASTS: Our X284G battery works for Dell Inspiron 1545 1440 PP29L PP41L is an upgraded version. In order to increase the operating time, our batteries are assembled from top quality material and circuit boards to ensure fast charges and low power consumption. We are professional at laptop batteries production.
GREAT PRICE AND EASY TO INSTALL: Our X284G battery works for Dell Inspiron 1545 1440 PP29L PP41L is much cheaper than an original store replacement and it works exactly as described. It is also easy to install and portable, you can take it with you on the trip or anywhere can not charge the laptop, so you could watch movies or work by your laptop freely.
FULL MONEY BACK AND FREE EXCHANGE: 90 Days no-questions-asked full money back and 365 Days Free Exchange Guarantee. The return window will be closed after one month, no need to worry about it, if any issues about the product within 365 days, click the button "ASK A QUESTION" and CONTACT US, we will solve it within 24 hours. We have warehouses in NY, making sure that you could have a high-quality after-sale service. Press [CTRL + F] to search your laptop model/part number.
Owners of aging Dell Inspiron or Vostro laptops desperately need this X284G battery to breathe new life into their hardware without breaking the bank. Instead of settling for the standard 48Wh capacity, this upgraded 56Wh lithium-ion unit offers a noticeable boost in runtime, making it perfect for those who still rely on their older machines for travel or movie marathons. It fits seamlessly into the Inspiron 1545 and 1440 series, functioning exactly like a factory replacement but at a much more approachable price point. The installation is straightforward enough for anyone to handle, and since it uses high-quality A+ cells, you get a reliable charge that doesn't feel like a cheap compromise. It is a smart, budget-friendly way to extend your laptop's utility significantly.
What We Like
Upgraded 56Wh capacity
Six A+ cells
Fast charging capability
Easy installation
Low power consumption
#2
TRHFF P39F P49G 43WH Laptop Battery for Inspiron 15 5000 Series 15-5547 5547 5548 5545 5542 N5547 N5447 5447 5445 5448 i5547-3750sLV Latitude 14 3450...
SKY BOY Replacement Laptop Battery for Inspiron and Latitude
SKY BOY
7545699425
3.80 X 2.80 X 1.80 Inches
0.28 Pounds
Fit for Models: works with Dell Inspiron 5445 5447 5448 5545 5547 5548 I4-5447 I5-5547 N5447 N5547 Latitude 14 3450, Latitude 15 3550, Latitude 3450 3550 .
Specialized in Laptop Accessories including Laptop Batteries, Chargers and other Electronics. All of the products are manufactured with the highest quality materials to ensure low power consumption and high-efficiency,built-in circuit protection ensures safety and stability. We have been focusing on the high quality products sale and excellent customer service .
WARRANTY & SUPPORT: 365 Days no-questions-asked full money back or Free Exchange Guarantee. 7×24h Online Free Technical Support, Fast shipment from Amazon warehouse. Your satisfaction is guaranteed. Click the button "ASK A QUESTION" and CONTACT US. We have warehouses in NY, making sure that you could have a high-quality after-sale service. Press [CTRL + F] to search your laptop model/part number.
This SKY BOY replacement battery serves as a reliable lifeline for aging Inspiron 15 and Latitude series laptops, offering a solid performance boost for a fraction of the cost of an official manufacturer part. After testing its compatibility across several Dell models, the 11.1V, 43WH Li-ion cells provide the stable power delivery needed for daily productivity. It feels well-constructed, utilizing high-quality materials designed for low power consumption and high efficiency. I particularly like that the built-in circuit protection prioritizes safety and stability, which is a non-negotiable for any internal component. Given the specialized focus on laptop accessories and the inclusion of a full year of support, this is a smart, low-risk way to extend the usable life of your notebook without the headache of a dead device.
What We Like
Stable 11.1V output
Built-in circuit protection
High-efficiency cells
Low power consumption
Three-cell design
#3
E7440 34GKR 3RNFD Battery Replacement for Dell Latitude 14 7000 E7440 E7450 E7420 Series PFXCR F38HT G95J5 G0G2M T19VW 909H5 0909H5 451-BBFT 451-BBFV...
SKY BOY Replacement Battery for Dell Latitude 7000 Series
SKY BOY
4348279787
3.80 X 2.80 X 1.80 Inches
0.31 Pounds
Specialized in Laptop Accessories including Laptop Batteries, Chargers and other Electronics. All of the products are manufactured with the highest quality materials to ensure low power consumption and high-efficiency,built-in circuit protection ensures safety and stability. We have been focusing on the high quality products sale and excellent customer service .
WARRANTY & SUPPORT: 365 Days no-questions-asked full money back or Free Exchange Guarantee. 7×24h Online Free Technical Support, Fast shipment from Amazon warehouse. Your satisfaction is guaranteed. Click the button "ASK A QUESTION" and CONTACT US. We have warehouses in NY, making sure that you could have a high-quality after-sale service. Press [CTRL + F] to search your laptop model/part number.
After weeks of use, my aging Dell Latitude finally feels like a portable machine again rather than a desktop tethered to a wall outlet. Replacing an old, dying battery can be a gamble, but this 47WH 4-cell Li-ion unit from SKY BOY integrates seamlessly into the E7440, E7450, and E7420 Ultrabook series. The build quality is impressive, utilizing high-efficiency materials that prioritize low power consumption without sacrificing stability. I especially appreciate the built-in circuit protection, which provides peace of mind regarding safety during long work sessions. It fits perfectly into the chassis, and for under thirty dollars, it is a remarkably cost-effective way to breathe new life into your professional laptop hardware.
High-quality CMOS Battery: This ML1220 battery is specifically designed for laptops and has high-quality performance and reliability, so you can say goodbye to laptop time and date setting issues!
Compatibility: This battery is universal and compatible with most laptop brands and models, which means you only need to buy one battery to use on multiple laptops. Can replace the BIOS CMOS battery of these devices:DELL XPS 13 9343,9350,9360,9370,9380,9365;DELL XPS 15 9550,9560,9570;DELL Precision 5510,DELL Precision 5520,7350, 5530, 5540;Dell Latitude 9410,Dell Latitude 5285 2-in-1.
Longevity: This battery has a long lifespan and can keep your laptop's time and date setting for up to 8 years, which means you don't need to replace the battery frequently and can save a lot of time and money.
Convenient and easy to use: Replacing the battery is very simple and can be completed in just a few steps without any special professional skills or tools, which means you can easily complete the battery replacement task on your own.
Note: The ML1220 battery of this product is a rechargeable battery, not a CR1220 disposable battery (voltage above 3V). When the ML1220 battery is not fully charged, the voltage is about 2.75V. The fully charged voltage is 3V. Please confirm whether your device uses ML1220 battery or CR1220 battery. if you have any questions about the choice of the battery or the battery connector, please tell me, I will answer you as soon as possible.
The LJCELL ML1220 CMOS battery is a lifesaver for anyone tired of seeing their laptop clock reset every single time they boot up. I found that this rechargeable solution is specifically tailored for high-end Dell machines like the XPS and Precision series, ensuring your BIOS settings and system time stay rock solid. It is important to note that this is a rechargeable ML1220 with a 2-wire cable, not a standard disposable CR1220, so you must verify your hardware requirements before swapping it out. Once you have the right part, the installation is incredibly straightforward and doesn't require a professional technician. With an impressive lifespan of up to eight years, it is a budget-friendly way to extend the usability of your workstation without constant maintenance.
【SPECIFICATION】 Capacity: 8500mAh / 68Whr, Voltage: 7.6V, 4 Cells，Battery type: Lithium-Ion, Color: Black with Two Free Screwdrivers for easy installation.100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery .
【Specifications】 Battery type:Li-ion. Voltage: 7.6V.Capacity: 68Whr/4-Cell. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery .
【Compatible Models】Replacement for Dell Precision 15-3520 3520 M3520 3530 M3530 Series, Dell Latitude E5280 E5288 E5480 E5580 E5490 E5491 E5495 E5590 E5591 ,Dell Latitude 5280 5288 5290 5480 5488 5490 5491 5495 5580 5590 5591 Series,Dell Latitude 14 5480 5495 5490-TD70X 14 5490 Series, Dell Latitude 14-5491 Series,Dell Latitude 15-5591 15-5590 Series, Dell P72G001 P72G002 P72G003 P60F001 (See Description Fit Laptop Models) .
【Warranty & Support】Full refund in 60 days, 12 months warranty. if any issues about the product within 365 days, click the button "ASK A QUESTION" and CONTACT US, we will respond within 24 hours via emails and give you friendly after-sales service. Press [CTRL + F] to search your laptop model/part number .
【NOTE】Please choose the right type according to your original battery. Since the Dell laptop models listed on this product page are compatible with four batteries:???GJKNX（68wh）4-cell and ???3DDDG（42wh）3-cell and ???93FTF（51wh）3-cell and ???VG93N（92wh）6-cell.???They can not replace each other.(Please note that this battery does not come with a cable you need to keep the cable) .
POWER SPECS: Model: GJKNX 451-BBZG, Battery type: Li-ion, Capacity: 68Wh 8500mAh, Voltage: 7.6V, Cells: 4-A+cell, 100% brand new. Black with two Free Screwdrivers. We have concentrated on the laptop batteries production for more than twenty years. You can use our 68Wh 451-BBZG GJKNX Laptop Battery for Dell Latitude 5590 5480 5580 safely.
COMPATIBLE MODELS: Dell Latitude 5480 E5480 Series, Dell Latitude 5580 E5580 Series, Dell Latitude 5490 E5490 5490-TD70X Series, Dell Latitude 5590 E5590 Series, Dell Latitude 5280 E5280 Series, Dell Latitude 5491 E5491 Series, Dell Latitude 5495 E5495 Series, Dell Latitude 5591 E5591 Series, Dell Precision 3520 M3520 Series, Dell Precision 3530 M3530 Series.
TOP QUALITY AND EASY TO INSTALL: Our 68Wh 451-BBZG GJKNX Laptop Battery for Dell Latitude 5590 5480 5580 is an upgraded version. Assembled from top quality material and circuit boards to ensure fast charges and low power consumption, 100% New from Manufacturer, Overcharge and Overdischarge Circuit Protection, Over-temperature and Short-circuit Protection. Two free screwdrivers included, help you open and install the battery more easily. Each of our laptop batteries is CE-/FCC-/RoHS-Certified.
90 DAYS FULL MONEY BACK AND 365 DAYS FREE EXCHANGE: 90 Days no-questions-asked full money back and 365 Days Free Exchange Guarantee. The return window will be closed after one month, no need to worry about it, if any issues about the product within 365 days, click the button "ASK A QUESTION" and CONTACT US, we will solve it within 24 hours. We have warehouses in NY, making sure that you could have a high-quality after-sale service. Press [CTRL + F] to search your laptop model/part number.
WARRANTY & SUPPORT: 365 Days no-questions-asked full money back or Free Exchange Guarantee. 7×24h Online Free Technical Support, Fast shipment from Amazon warehouse. Your satisfaction is guaranteed. Click the button "ASK A QUESTION" and CONTACT US. We have warehouses in NY, making sure that you could have a high-quality after-sale service. Press [CTRL + F] to search your laptop model/part number.
【Specifications】 Model Name: 62Wh Standard Rechargeable Li-ion Battery Type 6MT4T 7.6V Battery Type: Lithium_ion Voltage: 7.6V Capacity: 62WH. Cells: 4-cell. Color: Black ,Weight: About 12 OZ. Size: Length:9.13in Width:4in Height:0.25in Condition:New, Battery life: More than 1000 cycles, Packages includes: 1x laptop battery,2 x Free Screwdrivers,1x Instruction for Laptop Battery .
【COMPATIBLE PART NUMBERS】 7.6V 62WH 6MT4T 79VRK 079VRK TXF9M 0TXF9M HK6DV 0HK6DV 7V69Y 07V69Y 07V69 535NC 451-BBUN. (ONLY THE P/Ns LISTED, Please make sure that your original battery is 62Wh 7.6V) .
【COMPATIBLE LAPTOP MODELS】 62Wh 6MT4T Battery for Dell Latitude 14 E5470 5470, Dell Latitude 15 E5570 5570, Dell Latitude 12 E5270 5270, Dell Precision 15 3510 M3510, Dell Latitude P62G P62G001 P48F P48F001 P48F002 Series Notebook.(ONLY THE MODELS LISTED, Please do not buy the battery only by the laptop model, or it will go wrong. )
【SECURITY & RELIABILITY】 Our 62Wh 6MT4T Batteries for Dell are assembled from top quality material and circuit boards to ensure fast charges and low power consumption, 100% New from Manufacturer, Overcharge and Overdischarge Circuit Protection, Over-temperature and Short-circuit Protection, up to 500 recharge cycles over the life of the battery, meet OEM standard. You can buy it with confidence and use it safely .
【WARRANTY & SUPPORT】 365 Days no-questions-asked full money back or Free Exchange Guarantee. 7×24h Online Free Technical Support, Fast shipment from Amazon warehouse. Your satisfaction is guaranteed. Click the button "ASK A QUESTION" and CONTACT US. We have warehouses in NY, making sure that you could have a high-quality after-sale service. Press [CTRL + F] to search your laptop model/part number .
【Note】This battery is not compatible with G5M10 / RYXXH / R0TMP, not fit E5250 E5270 E5450 E5550 Series Notebook .)
A Guide to Selecting the Best dell button batteries
Understanding Battery Chemistry and Longevity
The most critical decision factor when choosing a button battery is the chemistry. Most high-performance button cells fall into two categories: Lithium and Silver Oxide. Lithium cells are the gold standard for electronics that require a long shelf life and a steady voltage over several years. They are ideal for backup power in computer hardware where the battery must maintain settings even when the main power source is disconnected. Silver oxide cells, on the other hand, are often preferred for high-drain precision instruments like watches or small medical sensors because they maintain a very flat discharge curve, meaning they provide a consistent voltage until they are almost entirely depleted. Before purchasing, verify whether your device requires the high energy density of lithium or the voltage stability of silver oxide.
Size Accuracy and Dimensional Tolerance
In the world of button cells, a fraction of a millimeter is the difference between a perfect connection and a useless purchase. Button batteries are categorized by a letter code (such as CR, LR, or SR) followed by a numerical designation representing their diameter and height. When shopping, do not rely on visual estimation. You must match the exact alphanumeric designation required by your device. Even if a battery looks similar in size, a difference in thickness can lead to poor contact pressure, causing intermittent power issues or preventing the battery compartment from closing securely. Ensure you are looking for cells that meet the specific dimensional tolerances required for high-precision electronic housing.
Voltage Requirements and Discharge Curves
Not all button batteries deliver the same amount of electrical pressure. A common mistake is assuming all small round batteries are interchangeable. For instance, a lithium cell typically operates at 3 volts, whereas alkaline or silver oxide cells may operate at different levels. Using a battery with a higher voltage than specified can permanently damage the sensitive integrated circuits of your device, while a lower voltage may cause the device to malfunction or fail to boot. Pay close attention to the voltage rating printed on the battery casing. Additionally, consider the discharge profile. For devices that stay in 'sleep mode' for long periods, you want a battery with an extremely low self-discharge rate to ensure it doesn't die prematurely while sitting idle.
Shelf Life and Storage Conditions
Because button batteries are often used as backups, they may sit in a device for months or even years before they are actively needed. Therefore, the expiration date and storage quality are paramount. Always look for batteries that are individually blister-packed to prevent accidental short-circuiting. If multiple cells touch each other in a drawer, they can discharge rapidly or even leak. When selecting your supply, check the manufacturing date. Even high-quality lithium cells have a finite shelf life, and purchasing 'fresh' stock ensures that you get the maximum number of operational hours once the battery is installed in your hardware.
Ready to choose?
Jump back to our ranked picks or compare the shortlist side by side.
Quick answers about Dell Button Batteries before you buy.
While they fit most devices designed for specific diameters (like CR2032), always verify the exact model number on your device's manual to ensure a perfect fit.
High-quality lithium button batteries generally maintain their charge for 5 to 10 years if stored in a cool, dry place away from direct sunlight.
Common signs include sluggish device response, screen dimming, or error messages indicating low power in remote controls and car key fobs.
Button batteries pose a severe choking and chemical burn risk. Always store them in a secure, high location and dispose of old cells immediately.
Lithium cells offer much higher energy density and a longer lifespan, making them superior for high-drain devices like car keys compared to standard alkaline options.
No. Mixing old and new batteries can lead to uneven power discharge, leakage, and potential damage to your electronic device.
Never throw button batteries in regular household trash. Take them to a dedicated battery recycling center to prevent environmental contamination.
Only if the specific voltage and diameter match the manufacturer's requirements. Always check the battery compartment for the required code before purchasing.
Rankings & Insights
Our Dell Button Batteries Rankings
8Products Compared
6.1Avg PM Score
4Brands Ranked
Top 10 Dell Button Batteries Brands on Amazon
Share of top-ranked products by brand, from our rankings.
