Vpc - m13m1e car charger.

[jenkins29]

I have a sony vaio vpc m13m1e and i want to use it to go on a long journey (in a car).

I was thinking about buying another battery to use if the other one ran out or i was thinking of buying a 12 volt car charger to plug in if the battery died.

I dont know which option would be better? I was heading towards the car charger option but i've been looking on the internet and i cant find one for my vaio model only other models??

I've looked on the sony websites and i dont think they do them or I just couldn't find them haha

does anyone know where i can get a compatible one ??

ANY HELP PLEASE

jenkins29