I concur with the other reviews here and also wish I had read them before my purchase. The Sony Vaio battery was received after around two weeks and worked fine for a month before the computer then did not recognise it (worked fine with original OEM battery). After several emails with no reply I now realise my money has been wasted. There is no other way to contact the company. The one-year warranty is obviously meaningless. No phone number or address should have deterred me in the first place and it certainly will do in future. Wish I could give zero stars. I have nothing positive to write about Okbatt, they have infuriated me good and proper. AVOID like ebola.
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