Postagem original de: Jon Mroz

Texto:

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.

Status:

open