Chosen Solution
Just installed a new battery into my laptop and the battery indicator is flashing orange.. the bios screen says “battery not present”. Laptop does boot the laptop but it won’t charge. tried multiple power adapters.
OK this has been solved.. When the replacement battery came in also not able to communicate i suspected a change in the firmware.. This laptop was on the latest A24 so i downgraded it to A14. Now it works. It seems that firmware Latitude E5550 A22 is when they changed the charging circuit routine and broke the ability to charge aftermarket batteries.. I suspect this is happening to any dell laptop.
If same result in another laptop then the battery is probably defective. Is it a DELL battery or a third party one? Update (01/16/2021) How to Reset the Dell Battery Sensor You can follow the following steps, which take only minutes and require no tools, to attempt a reset of your Dell battery: Completely power down the laptop and remove the cord from the computer.Flip the laptop over.Push on the battery release button or buttons to release the battery form the computer and remove the battery.Power on the computer without the battery, allowing it to boot completely.Completely power the computer down and remove the cord once again.Reinstall the battery, plug in the power adapter and re-boot the computer. Let us know how it goes.