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Help Me Choose

Help Me Choose: Battery

When choosing a laptop battery, it's important to consider how your laptop is used:

  • Is your laptop plugged in on your desktop most of the time?
  • Do you spend more time unplugged than plugged in?
  • Do size and weight matter when you travel?  
  • In most cases, the number of cells inside a battery determines its size, weight and life between charges. A cell is essentially a smaller battery that is packaged with and connected to other cells to form one large battery. Generally, the more cells, the more power, weight and size a battery has.

    Finally, it’s important to note that battery life is always subject to demands and usage. For extended periods of use away from an outlet, you might want to consider purchasing a second battery for your laptop from Dell.com.

    4-Cell Battery 6-Cell Battery9-Cell Battery
    Benefits:
    • Economical and lightweight
    • Dell's standard battery warranty is one year
    Benefits:
    • A good balance of battery life and size, at a moderate price
    • Dell's standard battery warranty is one year

    Benefits:
    • Longest power and battery life
    • Dell's standard battery warranty is one year
    Best with:
    Laptops that will be plugged in most of the time
    Best with:
    Laptops that will be plugged in some of the time, but will be used unplugged more often
    Best with:
    Laptops that will be used unplugged for extended periods of time
    Optimized for:
    • Battery power for short durations
    • Browsing the web
    • Social networking
    • Email
    • Office applications
    Optimized for:
    • Email
    • Office applications
    • Browsing the web
    • Listening to music and sharing photos on the go
    • Longer use between battery charges
    Optimized for:
    • Everything a 6-cell is optimized for, and also
    • High-performance office applications
    • Gaming
    • Graphics
    • Watching movies on DVD or Blu-ray Disc™
    Form factor:
    4-cell batteries will lay flat.
    Form factor:
    6-cell batteries will lay flat.

    Form factor:
    9-cell batteries will change the form factor of the computer. The battery extends below or out the back of the laptop because they need to be larger to help keep you going.


    In most cases, the number of cells inside a battery determines its size, weight and life between charges. A cell is essentially a smaller battery that is packaged with and connected to other cells to form one large battery. Generally, more the number of cells, more the power, weight and size a battery will have.

    Finally, it’s important to note that battery life is always subject to demands and usage. For extended periods of use away from an outlet, you might want to consider purchasing a second battery for your laptop from Dell.com.

     Product name Battery type Average run time on full charge
    Netbook Mini 10186-cell lithium-ion battery (28 WHr)Up to 7 hours and 55 minutes
    Inspiron™ Duo4-cell lithium-ion batteryUp to 3 hours and 57 minutes

    Inspiron 15R
    6-cell lithium-ion battery (48 WHr)
    9-cell lithium-ion battery (90 WHr)
    Up to 4 hours and 2 minutes
    Up to 7 hours and 58 minutes

    Inspiron 17R
    6-cell lithium-ion battery (48 WHr)
    9-cell lithium-ion battery (90 WHr)
    Up to 3 hours and 37 minutes
    Up to 7 hours and 20 minutes
    Inspiron 15 (N5030)6-cell lithium-ion batteryUp to 5 hours and 6 minutes
    Inspiron 15 (N5040)6-cell lithium-ion battery
    6-cell lithium-ion battery
    6-cell lithium-ion battery
    Up to 4 hours and 3 minutes
    Up to 5 hours and 2 minutes
    Up to 5 hours and 8 minutes
    Dell XPS™ 156-cell
    9-cell
    Up to 5 hours, 14 minutes
    Up to 9 hours, 9 minutes

    Dell XPS 17
    6-cell
    9-cell
    Up to 4 hours, 25 minutes
    Up to 7 hours, 32 minutes

     Frequently Asked Questions
    QHow long does a Dell laptop battery last? When should I consider replacing mine?
    QHow should I choose between two batteries with different Watt hours (Whr) available on one system?
    QHow long am I able to use my Dell laptop on a fully charged battery?
    QHow do I charge my Dell laptop battery?
    QShould I totally discharge, then recharge my Dell laptop battery occasionally to make it last longer?
    QCan a Dell laptop battery be "overcharged?"
    QWhen docked or AC adapter is plugged into a wall outlet, am I using my battery charge?
    QDoes Dell sell external battery chargers?
    QIs it easy to install a battery?
    QWill Dell laptops accept non-Dell batteries?
    QWhat is a modular bay battery?
    QIf I install a modular bay battery, are my primary and modular bay batteries working at the same time to power my laptop computer?
    QFor what use is the strip of LED lights on my battery?
    QWhat does Dell recommend for battery storage for a long period of time?
    QHow should I choose the right battery for my new system?
    QWhat is a battery slice?
    QDoes Dell recommend the use of a non-Dell replacement battery?
    QWhat can I do to make my battery last longer?
    QHow do I get the most runtime for a charge?
    QHow long am I able to use my Dell laptop on a fully charged battery?
    QShould I completely discharge my battery before I charge it?
    QShould I totally discharge, then recharge my Dell™ laptop battery occasionally to make it last longer?
    QWhat is ExpressCharge™?
    QHow long does it take for a Dell laptop battery to fully recharge?
    QDo I need to charge my battery fully when I get a new system or a new battery?
    QI generally do not unplug/undock my notebook. Does this hurt the battery?
    QWhat are the LED lights on my battery?
    QWhat does it mean when I push the button on the battery to determine the amount of charge, and alternating LED lights flash?
    QHow does Dell recommend batteries be stored for a long period of time?
    QWhy does the battery have a different warranty period than my system?