All SONY PCGA-BP2V batteries are supplied by the manufacturer that has been focus on the production of notebook batteries for more than 10 years. Standard OEM(original equipment manufacturer) Quality System and CE, ROHS, ISO 9001/9002 Certificates executive standard. We are proud to guarantee every purchaser and wholesaler 4~5 hours standby time and 300-500 full charge/discharge SONY PCGA-BP2V battery. If you can't find the your battery please contact us, our customer service will help you. We hope we can power up your system for business and vacations.