I am so glad finding this best solution for problem with Replacement Battery Not Recognized for my Dell XPS 12 9Q23.
I purchased a replacement battery and installed it in my Dell XPS 12 9Q23 in February 2019. In the beginning I was confident because of seller's description of a high quality and 100% compatible as original Dell. The battery did good work. I was satisfied for the long usage time of more than 4 hours for normal use. But after half a year the laptop starts with problem. The battery runs back very quickly. Laptop has to hang on the adapter again. This works only briefly until the battery is no longer recognized by the laptop and won't charged. If adapter plug in the on/off button flashes white and orange light. When computer turned on, I received a black screen with the error message "WARNING: The battery cannot be identified. The system will be unable to charge this battery ...."
I wrote the seller en tell them the problem. I received a response and they send me a new battery. But the new battery didn't work! The laptop still starts with a black screen indicating that the battery is not recognized by Dell laptop and bios. The on / off button still flashes white and orange light. Battery cannot charge. As soon as the adapter disconnects, the laptop switches off immediately.
Gladly I found best solution here with recommendation the steps to get it working. I followed these steps, and it worked with the new battery! I did a few tests with the laptop and battery. All tests are successful, the battery works normally, the laptop also works normally, with the adapter on it, without adapter, screen close and open again, in sleep mode and out. It works. I really hope it stays that way!