Contrary to what tech support may tell you, you may not need to buy a new battery if you can just reset your current one.

Dell Laptop / Reset a Dell Laptop Battery Not Being Detected
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Updated: February 20, 2017

Dell laptop computers have a built-in battery that, upon occasion, may fail be detected by the computer, hindering the computer's ability to power on with the battery installed and function properly.

Dell's technical support personnel may tell you that the problem is a 'temporary battery failure,' with no further explanation, and that you will need to purchase a new battery for your system.

If you do this, you may find that the brand new batteries exhibit the same exact symptoms as the "failed" battery.

The problem with many Dell batteries may be related to the computer's failure to detect a microchip located inside the battery that tells the computer "Hey! I'm a genuine Dell battery. It's safe to charge me now." According to Dell representatives, original Dell batteries have these microchips to help consumers detect counterfeit batteries, but the absence of a microchip or the inability of the system to detect a microchip can cause you major headaches!

To correct this issue, the battery might simply need to be reset. Unfortunately, however, many of Dell's technical support staff are either unaware of this procedure or pressured to sell new batteries. Of course, it is somewhat difficult for a technician thousands of miles away to know the difference between a battery that has failed and a battery that isn't being detected properly.

You can follow a standard removal process, taking only minutes and requiring no tools, to attempt a reset of your Dell battery. Just follow these steps:

  1. Completely power down the laptop and remove the cord from the computer.
  2. Flip the laptop over.
  3. Push on the battery release button or buttons to release the battery form the computer. Remove the battery.
  4. Power on the computer without the battery. Once the computer is fully booted, completely power it back down and remove the cord again.
  5. Slide the laptop battery back into place, plug in the power adapter and re-boot the computer.

The computer should now be correctly detecting the laptop battery.