4 cells 40Wh Dell Inspiron 15(3521) excellent quality battery uses an intelligent control chip, which comes with higher performance and reliability, longer run-time and battery life. Built-in protection circuitry ensures its stability and safety, fast charge but slow power consumption.
6 cells 65Wh Dell Inspiron 15(3521) excellent quality battery uses an intelligent control chip, which comes with higher performance and reliability, longer run-time and battery life. Built-in protection circuitry ensures its stability and safety, fast charge but slow power consumption.
Note : 1. 10.8V and 11.1V are compatible, they are in common use. 2.
14.4V and 14.8V are compatible, they are in common use.3. The 10.8V(=11.1V)
and 14.4V(=14.8V) are the different voltages, they are not compatible, please choose
the right battery(Voltage) for your laptop.
Strong endurance , power saver, use good cells to do laptop battery - Dell Inspiron 15(3521) Excellent quality Battery Replacement.
Features of Our Dell Inspiron 15(3521) replacement battery:
Each Dell Inspiron 15(3521) 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.
We specialize in providing high-quality batteries. The Dell Inspiron 15(3521) Battery has passed tests according to Security Standards to ensure battery's quality. The interface metal and solid insulators of theDell Inspiron 15(3521) battery are made of Premium materials to ensure stable current input and durability. Round-sealed package ,faster delivery and thoughtful after-sales service will make you feel assured to purchase.
Multiple Protection Features, Safe and Worry-Free.
short circuit protection
CHARGING TIME PROTECTION
over discharge protection
CLASS A PROTECTION
Product Larger Images
Please confirm your laptop battery and laptop model and check the appearance of the battery before placing an order. If you are not sure about your battery part number, you can contact our online customer service in time to avoid delays in your use. Regardless of any problems you encounter during the purchase process, please contact us in time and we will be happy to help you with your problem.
Compatible Battery Part Number
Compatible Laptop Models
Inspiron 14 7447
shipping within 24 hours
After your payment is successful, we will arrange delivery within 24 hours.
30-Day Money Back Guarantee
We promise, the new Dell Inspiron 15(3521) battery
Can be used free for 30 days, not satisfied with direct return.
We offer a 12-month warranty to replace the Dell Inspiron 15(3521) laptop battery! In the meantime, if your battery fails due to quality problems, we will replace it with a new one for free.
100% Security Payment
We focus on the protection of personal privacy information, and we have taken all steps to ensure that your shopping experience is safe and secure, buy Dell Inspiron 15(3521) replacement battery with confidence!
Q: The Dell Inspiron 15(3521) battery has been installed several times, but laptop can't boot up?
A: Carefully check if interfaces of the computer 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 laptop model are matched.
Q: How to store the Dell Inspiron 15(3521) battery if you won’t use it for a long time?
1It 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 Inspiron 15(3521) battery at a half fully charged state and keep it in a cool, dry place. 20 degrees Celsius is the optimum storage temperature.
2Install and run Dell Inspiron 15(3521) 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 Inspiron 15(3521) battery?
1Please fully charge your laptop before using it for the first time. Because the Dell Inspiron 15(3521) 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.
2Please don’t discharge battery to 0%, which is the most common reason among faulty batteries. It will damage battery if the laptop usually works at a critical power level ( below 3%).
3Charge 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.
4If your Dell Inspiron 15(3521) 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 laptop and store it in an antistatic bag in a cool, dry place.