The Sony VAIO Pro Sheet Battery is designed specifically for use with the VAIO Pro Ultrabook (sold separately). This extended sheet battery provides long battery life around the home, office, or while on the road. You can enjoy up to 13 hours of total combined battery life, double the standard battery, helping to keep you unplugged longer. Additionally, the VAIO Pro knows how to minimize charge time to give you long battery life while charging on-the-go.
Note:
Battery life will vary based on model configuration