Features of Our Dell 3K7J7 replacement battery:
Product guarantees to meet the needs of original specifications
Original Manufacturing compatibility is 100%
Low power consumption IC design.
No memory effect, fast charge.
Certified by CE, UL, ROHS, ISO9001/9002 for safety.
Our Dell 3K7J7 battery contains Grade A battery cells to ensure longer battery life and more charge cycles.
Our requirements for safety performance are extremely strict, and each replacement battery for Dell 3K7J7 has gone through more than one hundred strict tests on the quality and safety. More importantly, our Dell 3K7J7 Laptop Battery are sold directly on the network, without other agents profits included. Thus, the Dell 3K7J7 battery price that you see on our website will be 20-50% lower than our competitors in general.
Any question or suggestion about this Dell 3K7J7 battery? please Contact Us so we can offer you the most convenient service.
||11.1V(Wider than 65WH)
||Full 12 Months Warranty and 30 Days Money Back
Please check the model and shape of your Dell 3K7J7 original battery (use Ctrl + F to search the model). Make sure you get the correct battery.
3K7J7 Can replace the following part numbers
3K7J7 Fits the Following Models
Dell Latitude E5440 Series
Dell Latitude E5540 Series
Why Choose Dell 3K7J7 battery from Us?
We offer only the best quality battery packs; best in both manufacturing process and cell quality. Our battery packs use very high quality “A” grade cells manufactured by industry leaders like, Sanyo and Panasonic. All our batteries are brand new. We do not sell used or refurbished batteries.
Save up to 30% off prices! We are amongst the most competitive suppliers compared to other vendors from a price-quality perspective.
Our UK customer service executives are eager to help you save time and money by sharing their knowledge and expertise on batteries and chargers.
Your absolute satisfaction is our top objective. We offer a 30 day money-back guarantee on all our products. In addition, most of our battery packs have a 12 month free replacement warranty for manufacturer's defects.
Each battery is 100% compatible with the original equipment and is manufactured to match or outperform the original equipments specifications for form, fit and workmanship.
Delivery time is commonly 7-15 business days.
Maximize the Battery Performance:
Breaking In New Batteries -new Dell 3K7J7 batteries come in a discharged condition and must be fully charged before use. It is recommended that you fully charge and discharge your new battery for Dell 3K7J7 two to four times to allow it to reach its maximum rated capacity.
Keep Your Batteries Clean - It's a good idea to clean dirty battery contacts with a cotton swab and alcohol. This helps maintain a good connection between the battery and your portable device.
Battery Storage -If you don't plan on using the Dell 3K7J7 battery for a month or more, we recommend storing it in a clean, dry, cool place away from heat and metal objects. Ni-Cd, NiMH and Li-ion batteries will self-discharge during storage; remember to break them in before use.
Exercise Your Battery -Do not leave your Dell 3K7J7 battery pack dormant for long periods of time. We recommend using the battery at least once every two to three weeks. If a battery has not been used for a long period of time, perform the new battery break in procedure described above.
Preventing the Memory Effect -Keep your battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-ion batteries which do not suffer from the memory effect.
Please notice this: weak batteries charge faster and remain on 'ready' indicator longer than strong ones. Also it only be used for a short time. So do not buy a used Dell 3K7J7 battery even if it is very cheap because used battery usually means weak battery.
All our product images are for reference only,The Dell 3K7J7 Laptop Battery supplied by our company are compatible with certain products of manufacturers, and Any reference to products or trademarks of such manufacturers is purely for showing the product with which our products are compatible. Besides, our company and website are neither affiliated with these manufacturers nor are the products listed in our website manufactured by those products manufacturers.
Tags:battery Replacement for Dell Latitude E5440 E5540 Series, Dell 3K7J7 battery, Dell Laptop Battery, Batteriesfast.co.uk
Battery buying Tips, Kindly read carefully :
1. The new laptop batteries are not fully pre charged, you have to charge them in your laptop before you expect some or full backup from a new battery.
2. When a laptop is not working, some buyers assume that the battery replacement is required. Please be aware that the laptop works well directly through ac adaptor even if the battery is not installed. If this is not the case, please do not directly buy the battery unless your laptop works well with ac adaptor.
3. If your old battery is totally dead ie if the laptop gives zero backup with your old battery then, there may be two possibilities :
(a) The old battery is dead and laptop is ok. In this case, only replacing the battery with new one, will solve the problem. For this, just install the new battery into laptop and allow 3-4 hours to get it fully charged. During this time, you may keep working on your laptop.
(b) Old battery is dead and the battery charging circuit inside laptop motherboard, is also dead. In this case, the new battery can be utilised only after you get the laptop motherboard repaired from any expert technician.
If you have any similar laptop battery near you for checking, you may try using that battery to check if laptop charging circuit is able to charge any battery and if that battery gives some backup time even if it is 4-5 minutes.
Please be informed that laptop batterries should not be allowed to remain fully discharged for long time. If allowed, they becomes dead and unusable.
I hope the information given above, will help you reach proper buying decision.
How To Find The Correct Product
When purchasing a battery or adapter for your device, compatibility is the most important factor. In order for our products to work on your device, it must be compatible. Batteriesfast.co.uk offers more than 150,000 compatible models and part numbers for your devices. Before purchasing our products, please follow our tips below to find the right product for your device.
Your device owner's manual should have the brand and model number on the front cover. In addition, most devices have a manufacturering label on the bottom of your device. This label should have the brand and model number on it.
If you are purchasing an adapter, you should verify the device's model number, input voltage and current before placing an order.
If your are purchasing a battery, you should shut down your device first, and then remove the battery and look at the original battery part number label of the battery.
Batteries from major manufacturers use standardized part numbers. The following are the sample part numbers from the major brands:
HP, Compaq 123456-001
Sony PCGA-BP12, VGP-BP1
Dell 312-1234, 1234P
IBM, Lenovo 02K1234, 08K1234
To confirm compatibility, customer should verify the physical appearance, part number, position and orientation of the connector and the latch position of your original battery with the product information shown on our website.
Please kindly note that there may be two different voltages (11.1V and 14.8V) associated with the same model or part number.
They are totally NOT compatible. Please check your original battery voltage before placing an order.
A Li-Ion battery labeled 10.8V is the same as a Li-Ion battery labeled 11.1V.
A Li-Ion battery labeled 14.4V is the same as a Li-Ion battery labeled 14.8V.