Warren,
That is interesting. I just read in one of my computer magazines a few days before the Dell recall about the excellent battery life of some of those brands. I guess if the computer burns up, the battery will last a long time. They must have Sony make them special for their computers and they aren't the normal over the counter type you would get. Now I know why all the tags saying to replace only with Dell, apple, etc. approved batteries are on everything.
Ron