A Method for Reviving and/orCommunicating with A Fully Discharged Smart Battery Pack
Original Publication Date: 2002-Nov-07
Included in the Prior Art Database: 2002-Nov-07
Smart batteries for laptop computers and other host devices can, via several mechanisms, find themselves in a “dead state”. That is, a state where the pack voltage has dropped below some threshold such that the pack is completely non-functional. Not only can the pack not be used to power the host, additionally, it can’t be charged, revived, or interrogated. While there maybe valid reasons for certain cell chemistries to have a point of no return for charge it nevertheless is still valuable to be able to ask the pack how it died, what where its symptoms, what events preceded (or contributed) to its death, and in certain cases re-charge the pack. Currently there is no simple method to revive or interrogate a dead pack. This technique is a method for doing such without adding additional hardware or software to the battery pack, and avoids the need to open or disassemble the pack.