Dell Laptop Battery - Frequently Asked Questions

Dell Laptop Battery - Frequently Asked Questions


Learn about batteries on a Dell laptop PC. Find answers to common questions like charging, discharging, warranty status, battery health, battery maintenance, etc.


Note: Like most laptops, Dell laptops use lithium ion batteries, which can swell for a variety of reasons such as age, number of charge cycles, or exposure to high heat. While a swollen pack does not represent a safety concern, damaged or swollen components should not be used. Should you have an issue with a battery pack swelling, we recommend discontinuing use and replacing it with a Dell authorized battery
Caution: Using a non-Dell or incompatible battery may increase the risk of fire or explosion. Replace the battery only with a compatible battery purchased from Dell that is designed to work with your Dell computer. Do not use a battery from other computers with your computer.

Like most laptops, Dell laptops use lithium-ion batteries. One type of lithium-ion battery is the lithium-ion polymer battery. Lithium-ion polymer batteries have increased in popularity in recent years and have become standard in the electronics industry due to customer preferences for a slim form factor (especially with newer ultra-thin laptops) and long battery life. Inherent to lithium-ion polymer battery technology is the potential for swelling of the battery cells.

Swollen battery may impact the performance of the laptop. To prevent possible further damage to the device enclosure or internal components leading to malfunction, discontinue the use of the laptop and discharge it by disconnecting the AC adapter and letting the battery drain.

Swollen batteries should not be used and should be replaced and disposed of properly. We recommend contacting Dell product support for options to replace a swollen battery under the terms of the applicable warranty or service contract, including options for replacement by a Dell authorized service technician.

  • Exercise caution when handling Lithium-ion batteries.
  • Discharge the battery before removing it from the system.
    To discharge the battery, unplug AC adapter from the system and operate the system only on battery power.
    When the system will no longer power on when the power button is pressed, the battery is discharged.
  • Do not crush, drop, mutilate, or penetrate the battery with foreign objects.
  • Do not expose the battery to high temperatures, or disassemble battery packs and cells.
  • Do not apply pressure to the surface of the battery.
  • Do not bend the battery.
  • Do not use tools of any kind to pry on or against the battery.
  • If a battery gets stuck in a device as a result of swelling, do not try to free it as puncturing, bending, or crushing a battery can be dangerous.
    Contact Dell product support for assistance and further instructions.
  • Using a non-Dell or incompatible battery may increase the risk of fire or explosion. Replace the battery only with a compatible battery purchased from Dell that is designed to work with your Dell computer. Do not use a battery from other computers with your computer. Always purchase genuine batteries from https://www.dell.com or otherwise directly from Dell.

When storing for more than 4 days these guidelines can better preserve the life of your battery:

  • Do not store batteries for long periods plugged into or attached to any power source. This includes AC adapters and laptop security carts plugged into an outlet.
  • Laptop batteries, including those stored in laptop systems, should maintain an Operational Storage Temperature of 0° to 35°C (32° to 95°F).
  • Batteries may be stored in the laptop or outside of the laptop.
  • Charge batteries before storing. The recommended charging time should not exceed 1 hour. Typically, this should charge the battery to between 80% and 100%. (Some discharge will take place over time. Stored batteries are expected to discharge 10-15% over a four month period, for your information).

On Dell laptops, battery health status can be checked, both outside and inside the operating system environment. The battery health status indicates the current state of the battery performance and allows you to decide if the battery requires a replacement. Battery health can be checked using:

  • BIOS
  • Hardware diagnostics
  • Dell utilities:

To learn more about checking the battery health status, refer to the Dell knowledge-base article How to Check the Battery Health Status on a Dell Laptop

All rechargeable batteries wear out with time and usage. As time and cumulative use increase, the performance will degrade.

For the typical user, noticeable reduction in run time generally will be observed after 18 to 24 months. For a power user, reduction in run time generally may be experienced prior to 18 months. We recommend buying a new Dell laptop battery when the run time does not meet your needs.

To learn more about extending the life of a battery, refer to the Dell knowledge-base article How to improve your Dell laptop's battery performance

The battery charges in the laptop when the laptop is connected to a power source via the AC adapter. The charge time varies depending on the laptop. If the laptop supports ExpressCharge™ , the battery typically will have greater than 80% charge after about an hour of charging, and fully charge in about 2 hours with the laptop powered off.

Note: The charge time varies between Dell laptops. For more information, refer to the User Manual of your Dell laptop.

No, Dell laptops are designed to stop charging the battery when it reaches full charge. Once the battery is fully charged, the Dell laptop will continue to use power from the AC adapter.

Note: Dell recommends using the original AC adapter specific to your Dell laptop for optimal performance.

On most Dell laptops, the battery can be installed and/or removed easily. However, many of the newer laptops are designed using non-removable batteries. Such non-removable batteries should be installed and/or removed by Dell authorized technicians only.

To learn more about how to replace a battery on your Dell laptop, refer to the User Manual of your Dell laptop PC.

Dell has a rigorous qualification process by which all Dell batteries are validated to ensure proper functionality, performance and safety. Dell strongly recommends to use a compatible Dell battery purchased from Dell that is designed to work with your Dell laptop.

Some non-Dell batteries are available in the market with claims of compatibility with Dell laptops. Dell cannot verify these claims, nor the safety of using them on a Dell laptop.

Dell laptop batteries come with a 1-year warranty, are engineered for optimal safety and performance with a compatible Dell laptop, and are supported by Dell Technical Support for the length of the warranty period.

Caution: Using a non-Dell or incompatible battery may increase the risk of fire or explosion. Replace the battery only with a compatible battery purchased from Dell that is designed to work with your Dell laptop. Do not use a battery from other computers with your computer.

A Higher Watt hours (Whr) on the same system under the same operating conditions will generally deliver longer battery run time. For example, if you compare the same system, running the same applications, the 53Whr battery would provide approximately 65% more run time than the 32Whr battery.

Batteries are considered consumable items, all batteries degrade with time and use. The warranty is very similar to common auto warranties which exclude consumable items such as tires. Dell provides separate warranties on it's batteries, for more information refer to the Dell knowledge-base article Dell Laptop Battery Warranty Support

Dell provides a standard one-year warranty on Dell batteries. Batteries are a consumable item and battery performance reduces over time and use. The warranty is very similar to common auto warranties which exclude consumable items such as tires. For more information, refer to the Dell warranty page.

A Dell laptop advertised as having the ExpressCharge™ feature, the battery typically will have greater than 80% charge after about an hour of charging and fully charged in about 2 hours with the laptop powered off.



battery and power support Visit our Battery and Power site for additional resources and information.

How to Increase Laptop Battery Life (Official Dell Tech Support) on YouTube - (1:56)

Laptop Battery Myths (Official Dell Tech Support) on YouTube - (3:08)

Check Your Laptop Battery Health - (2:34)

Maximize Laptop Battery Runtime - (1:25)


Article ID: SLN128667

Last Date Modified: 09/20/2019 11:31 PM


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