Home > Dell Laptop Batteries > Latitude D820 >

  85 WHr 9-Cell Lithium-Ion Primary Battery for Dell Latitude D820

Dell Latitude D820 9 cell Extended laptop battery 310-9122 0MM160 312-0394 310-9123 0YD623 0MM156 0CF704 0RW220 0WN979 0GR932 0HR048
VIDEO DESCRIPTION OF DELL LATITUDE D820 BATTERY LOCATED AT THE BOTTOM OF PAGE.


 
Learn about EXTENDED RUN LAPTOP BATTERIES.
List Price: $155.99
Our Price: $65.90
Off List Price$90.09!


Availability:: Usually Ships in 24 Hours
Product Code: DELL-50XT-D820
Qty:

DESCRIPTION PART NUMBER CROSS REFERENCE
 

9 Cell Replacement for Dell Latitude D820

This is a brand new Extended Run Dell Latitude D820 replacement battery. This long run battery will run at least 50% longer than the standard capacity battery that ships standard with your laptop. The added run time is achieved with an additional 3 cells inside the cartridge. The extended run battery is our best-selling model as the added capacity does not require a larger battery pack. The extended run Dell Latitude D820 battery pack is the same size battery cartridge as the original 6 cell battery. Users of this battery pack experience an additional 1-2 hours of run time over the standard battery for just $10.00 added cost. Estimated run time with this battery is 3-5 hours. Longer run times can be achieved by minimizing the power use, especially the screen brightness. The superior Samsung cells inside the battery cartridge will provide longer run times between charges as well as a longer service life than cheaper batteries. In addition, Li-ion batteries are not subject to the memory effect common with older battery technology. This means you can recharge your laptop any time without diminishing your battery capacity. This laptop battery replacement is typically superior to the original battery and is 100% compatible with your Dell Latitude D820 laptop computer. The battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty.

  • Brand:
  • Voltage:
  • Battery Capacity:
  • Battery Type:
  • Cell Origin:
  • Color:
  • Warranty:
  • Guarantee:
  • Useful Life:
  • XTend replacement computer battery
  • 11.1 Volts
  • 7800 mAh or 85 WHr
  • 9 Cell Li-ion (6 cell available here)
  • Samsung (South Korea)
  • Grey
  • 2 Year Warranty
  • 30 day full satisfaction guarantee
  • 300-500 recharge cycles

Not all computer batteries have the same capacity and run times. The higher capacity battery cells inside this Dell Latitude D820 cartridge have an energy capacity of 7800 mAh. These are the highest capacity Li-ion batteries on the market today and superior to batteries rated at 6600 & 7200 mAh. This battery will deliver 20% more run time than cheaper 9 cell versions and 77% more run time than cheaper 6 cell versions of this battery. If you prefer the 6 cell battery, click here for the standard 6 cell battery Dell laptop (our Dell-65)..

This battery replaces the 85 WHr 9-Cell Lithium-Ion Primary Battery for Dell Latitude D820 series laptop batteries and additional machines which are listed at the extreme bottom of this web page.

Replaces these many Dell Latitude D820 laptop battery part numbers:

    0CF623
    0CF704
    0CF711
    0CR160
    0CW666
    0CW674
    0DF192
    0DF230
    0DF249
    0FF231
    0FF232
    0GR932
    0GX047
    0HR048
    0HX306
    0JT784
    0MM156
    0MM158
    0MM160
    0MM165
    0NX618
    0RW220
    0TT721
    0WN791
    0WN979
    0XD735
    0XD736
    0XD739
    0YD623
    0YD624
    0YD626
    0YW652
    0YW670
    310-9122
    310-9123
    312-0393
    312-0394
    312-0401
    312-0402
    312-0538
    999C5830F
    999C6570F
    CF623
    CF704
    CR160
    CW666
    CW674
    DF192
    DF230
    FF231
    FF232
    GR932
    GX047
    HR048
    HX306
    JT784
    MM156
    MM158
    MM160
    MM165
    NX618
    RW220
    TT721
    WN791
    WN979
    XD735
    XD736
    XD739
    YD623
    YD624
    YD626
    YW652
    YW670

Laptop Battery Express only deals with brand new premium computer batteries. We never carry recycled or used batteries. We only use the highest quality cells inside the battery pack so you will have a long service life (300-500 recharge cycles). We do not use cheaper battery cells which can wear out in a little as 6 months. Our inventory turns rapidly and you will always receive a freshly manufactured battery.

How to care for your Dell Latitude D820 battery.

You can extend the life of your Dell Latitude D820 laptop battery significantly through the proper care and handling of your battery.

  • Any new  Dell Latitude D820  laptop battery should first be fully charged by leaving it plugged in overnight. Once a computer battery is fully charged it will no longer accept any more power. It is a common practice to leave laptops plugged in after they have been turned off so that the battery has a full charge the next time you use your laptop. It is probably fully charged within 5 hours.
  • A brand new notebook battery is in a weakened condition since it has not been conditioned yet. Condition and break in your new battery by performing 5 partial discharge and recharge cycles the first week you receive your new battery.
  • Run on battery power without the AC adapter cord at least once a week to keep the battery cells active and at their peak potential. When your laptop is plugged into the power adapter the battery goes to "standby mode" while your laptop runs directly on electricity from the wall outlet.
  • Even though your Dell Latitude D820  battery indicates it is fully charged, your battery will return to a weakened state again in a few months if it does not get some exercise through partial discharge and recharge cycles while running on battery power alone.
  • If your Dell Latitude D820  battery has not been actively used 2 months or more, condition your battery again with 5 partial discharge & recharge cycles to increase the batteries capacity and run time.
  • Don't run your Dell Latitude D820 battery all the way to empty. Your battery will have a longer service life if it receives shallow discharge and recharge cycles. Research has shown that the useful life of the battery will be much longer if you begin to recharge the battery any time before reaching 20% of the remaining power capacity. Recharging the battery even after 10 minutes will not reduce the battery's life span as lithium batteries do not have the memory effect which was found in older NiCad battery technology. NiCad batteries have never been used in laptops, even the earliest models.
  • Never run your Dell Latitude D820 battery below the 2% critically low warning point. If your battery is run below this point it may not have enough energy to even recharge. This may effectively "kill" your battery.

How can I extend my Dell Latitude D820 battery run time?

You can extend your Dell Latitude D820 battery run time by minimizing the power drain on your battery. A 6 cell battery will run approximately 2 to 2-1/2 hours when the battery is new. Even longer times can be achieved by minimizing the power consumption of your laptop. Here are the top ways to reduce your power consumption.

  • Reduce the brightness of your laptop screen. This is the number drain on your battery by far.
  • Avoid using the CD or DVD drive as the motor consumes a fair amount of power.
  • Turn off your wireless finder if you are not using the internet.
  • Remove any devices plugged into your USB ports or other ports.
  • Close out programs you are not using. By minimizing the load on your CPU, sometimes you can avoid having the cooling fan turn to its high speed mode.
  • Increase your memory to 4 Gigabytes. This creates less work for your hard drive. Data is temporarily written to your hard drive when your memory is not sufficient to hold all the data on the many pages you may be accessing.
85 WHr 9-Cell Lithium-Ion Primary Battery for Dell Latitude D820 Laptop

Compatible AC Power Adapters designed for this product
ac adapter for Dell Latitude PA10
Our Price: $59.00

Add
ac adapter for Dell Latitude PA10 310-2862 310-3399 310-4002 310-6325 310-6557 310-7441 310-7501 310-7698 310-7699 310-7712 310-7743 310-7744 310-7860 310-8363 312-0596 312-0597 312-0942 320-1389 330-0733 330-0945 330-0947 330-1017 330-1825 330-1826


This battery & adapter are compatible with the following laptop models. In addition, if your battery or adapter part number matches the list above, this battery will be comapitble even if your specific computer is not listed.

Dell Laptop Batteries > Latitude D820