Anyone ever used companies like batterymall.co.uk or BatteryStyle? I'm looking to replace the fan in my aging Vaio and I can't find anything "official" anywhere.. will these (here and here) fans work for me? I'm put off by some of the shocking grammar on those two sites tbh (similar errors on both, funnily enough - I wonder if they are owned by the same company), they just don't look very trustworthy. :\