I have no idea about chargers. I bought one on ebay (new product) pretty cheap about two years ago. It was working fine until recently, started making a buzzing noise and I found my laptop wasn't holding the charge well. My brother in law mentioned that he bought it from Revane. I did it and I have to admit it was only a few months and who knows how many years. However, I think that if you pay a little more you get a little more than the cheap price on ebay.
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