The battery is id’d as a Sony on the power panel. Its exactly the colours of the TR right down to the rubber feet. I have recharged it twice so far and have not noticed any heating or other weirdness. I have not been very scientific in gauguing its run time yet but it has exceeded the standard battery.  I’ll post later on this. I like the battery because it extends behind the Vaio and tips it slightly with the back feet being on the battery. It feels more stable when I am working. I would say its an OEM of the Sony.

Is this the battery being sold on e-bay that we were discussing earlier?  Also, does it provide battery life equivalent to the standard or extended?