I'd love to see a quote from anywhere that confirms what you say, because everything I have read and heard from people who were there, has said nothing abut the batteries catching fire at all.
As I said a couple of the oil lines that go to the motors in the wheels ruptured when he crashed and rolled, spraying oil over the hot motors which set the oil alight, and the burning oil set the car alight.
Hammond got out of the car under his own power a good few minutes before the car burst into flames actually, and as you can see from all the photos online the fire was out within moments of the fire crews arriving on the scene.
Also I can tell you without any worry of correction LI-Ion batteries do not burn for days on end, they burn for a very short time as there is not that much flammable material in one.
I know this as it is my job to set fire to Li-Ion battery modules and packs for various EV manufacturers, and to deliberately impact and impale battery modules and packs to see what happens, and to check all the safeguards work as designed.
And finally yet again I point you to the post crash photos all over the internet, of the burnt out car upside down, the battery pack is very clearly visible and very clearly completely intact, and not burnt out and not exploded, so again where is the evidence that the battery pack caught fire at all ?
Well they did mention it on the show...