I would offer just a word of warning on batteries. My Dell battery failed suddenly, 2 years to the day after I first switched on the laptop. I went on eBay to find a battery that was advertised as an original Dell, but at an incredibly good price. It came from Hong Kong in very good time, and looked absolutely genuine. It worked fine for about 6 weeks, then died. The guarantee was for 4 weeks, and the supplier never replied to my messages. I then bought a "compatible" battery from a UK supplier, which so far is fine. Both batteries together cost me considerably less than one from Dell, but this was not an enjoyable experience.
