My notebook brand is Acer. Before I bought this set of notebook, many of my friends commented that I should not buy acer brand. They suggested other brands to me. However those suggested brands are way beyond my budget. Only Acer’s price range meets my budget. So without thinking further, I just grab a unit from PC shop. so far the Acer notebook had been with me for more than 3 years yet it is still in good conditions. Only once a while the acer batteries will give me problem. Even though I had fully charged it over the night, but the next day after use it a while, the batteries will become flat. Perhaps I should just change to new battery for time being. When it is really obsolete only I change for another unit.