This Dell 3K7J7 battery Replaces:
This 3K7J7 battery Fits The Following Dell Models:
Dell Latitude E5440 Series
Dell Latitude E5541 Series
Features of Our Dell 3K7J7 replacement battery:
Each Dell 3K7J7 replacement battery unit is made of high-quality lithium-ion cells for longer last time.
The battery is up to standard and fully compatible with original specifications.
All our batteries are certified by CE, UL, ROHS, ISO9001/9002 as safe products.
The interface metal and fixed insulator of the battery are made of good materials to ensure stable current input and durability.
Why Buy From batteryone.co?
Wide Selection of Batteries:
We offer a wide variety of batteries, from standard alkaline batteries to specialized batteries for specific devices, from the everyday to the hard-to-find. So you're sure to find the right battery for your needs.
Our prices are highly competitive and we offer frequent discounts and promotions to ensure that our customers get the best value for their money.
Expert Advice and Support:
Our team of battery experts is always on hand to offer advice and assistance with any battery-related questions or concerns.
Convenient Online Shopping:
Our online store makes it easy to browse and purchase batteries from the comfort of your own home, with fast and reliable delivery options available.
We stand behind the quality of our batteries and offer a satisfaction guarantee on all of our products, so you can shop with confidence and peace of mind. 30 Days Money Back, 1 Year Warranty!
Q: How to charge a new battery for Dell 3K7J7 for the first time use?
A: New Dell 3K7J7 battery pack is normally shipped in its partially charged condition. Please cycle your new 3K7J7 battery pack by fully charge and discharge it for 3-5 times to allow it to reach its maximum rated capacity before use. (Note: it is perfectly normal for a battery to become warm to the touch during charging and discharging).
New batteries are hard for your device to charge; they have never been fully charged and are therefore "unformed". Sometimes your device's charger will stop charging a new battery before it is fully charged. If this happens, simply remove the battery from your device and then re-insert it. The charge cycle should begin again. This may happen several times during your first battery charge. Don't worry; it's perfectly normal.
Q: The Dell 3K7J7 battery has been installed several times, but device can't boot up?
A: Carefully check if interfaces of the device and the battery are correctly connected. If the cause of loose contact is ruled out, please contact the after-sales customer service to ensure that the battery part number and device model are matched.
Q: How to store the Dell 3K7J7 battery if you won’t use it for a long time?
1.It is not a feasible way for you either fully charge or fully discharge battery if long term storage. Security risks will generate if under a fully charged state, while both cells and control circuit protection lock will be deactivated if under a fully discharged state. So you’d be better store the Dell 3K7J7 battery at a half fully charged state and keep it in a cool, dry place. 20 degrees Celsius is the optimum storage temperature.
2.Install and run Dell 3K7J7 battery as often as possible(at least once a month) so as to ensure its availability and avoid power drain.
Q: How to extend the life of your Dell 3K7J7 battery?
1.Please fully charge your device before using it for the first time. Because the Dell 3K7J7 battery is normally shipped in a partially-charged state. Please cycle your battery pack by fully charge (more than 12hours) and discharge(less than 10%) for 3-5times to reach maximum rated capacity.
2.Please don’t discharge battery to 0%, which is the most common reason among faulty batteries. It will damage battery if the device usually works at a critical power level ( below 3%).
3.Charge the battery before it runs to 20%. It is scientifically justified that charging battery at 20% till 80% will extend battery life to the longest.
4.If your Dell 3K7J7 battery won’t be used for a long time, please charge it once a month and keep battery power over 50%, remove it from your device and store it in an antistatic bag in a cool, dry place.
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How to find Lenovo Battery Part Numbers?
Essential to the purchase of your new laptop battery is the part number. A part number is a unique identifier that is assigned to a part to simplify referencing and to unambiguously define a part within a single manufacturer. Knowing about part number of the battery will more accessible to buy a correct battery, and it is comparatively accurate to search a battery by its part number than the model name of laptop.
A laptop battery has at least one part number (that is, the battery model we often say), and many batteries even have multiple part numbers. When you find a battery with the same part number as your laptop battery, you can be sure that it is fully compatible with your laptop.
How do I remove the battery from my Lenovo laptop?
If your laptop is plugged in, either unplug it or disconnect the power cable.
Turn your laptop over so the bottom is facing up.
Locate the battery latch on the bottom of the laptop. The image above shows some of the more common battery latches found on laptops.
To remove the battery, slide the latch switch to the opposite side and hold it in that position until the battery is released.
On some laptops, the battery pops out on its own. On others, you'll need to pull it out gently with the tips of your fingers.
Lenovo Battery Part Number Identification
Lenovo often lists several part numbers, one is called "FRU p/n", on is called "ASM p/n", and occasionally the model number is just listed on the battery with no preface. Also on many Lenovo cartridges there is a red or orange circle with a number inside it (also may contain a + sign).
Examples of Lenovo Battery part numbers:
How Do I Find The Model Of My Laptop?
Method 1: Locating The Model Number Of Your Laptop Using Product Label
This is the easiest and the most efficient way of locating the model number of your device. Follow the steps given below to get your model as well as product number:
1.In most of the laptops, the label containing the information is located on the lower side of the device. To locate it, first of all, unplug the laptop from any AC cable and shut it down.
2.Reverse your laptop and keep it in a safe place.
3.On the base of the laptop, you may see a label where an icon of your computer manufacturer is printed.
Please note: on some laptops, the label is inside the main battery compartment, and you must remove the battery to read the label. In addition, the manufacturer may print the model of the laptop (such as E5-572G-593Y for Acer Laptop) on or near the keyboard.
Figure 1: Label on or near the keyboard
Figure 2: Label on the back of the notebook
Figure 3: Label inside the battery compartment
Figure 4: Near power button (such as Latitude E6410 for Dell Laptop)
Figure 5: View the Power On Screen (such as Latitude D630 for Dell Laptop)
Method 2: Locating The Model Number Of Your Laptop Using System Information
This method works very well if your laptop is in working state. Most of the old computers’ sticker get rub out by time and becomes illegible. Hence, this method is considered best among all cases to locate your laptop model number. This technique works very fine with all the latest Windows 7/8.1/10 Operating Systems.
1.Head on to the home page of your laptop.
2.Click windows start button button and get on to 'Run' menu. You can also do this by using the shortcut key ⊞Win + R.
3.Type in "msinfo32" without quotes.
4.Click OK. This will open the Windows System Information utility, which contains details about your specific model of laptop (such as Latitude E6520 for Dell Laptop).
5.Find and write down the "System Model" number.
Method 3: Locating The Model Number Of Your Laptop Using Access Of BIOS
This method is the last option but the most successful one. If above methods did not work on your computer, you can rely on this.
BIOS stands for Basic Input/output system, you can access this system and find out the information about your computer using the steps given below:
1.Close all your applications and save in case you are doing some important work. Restart your computer.
2.As soon as your computer turn on, immediately press the F2 key or ESC key whichever your computer supports to go to the BIOS Menu.
3.If you failed to go to the boot menu, again restart your computer and follow the above steps again.
4.Once you get into the BIOS, you can see the full information such as model number, the product number of your computer.