SONY VAIO PCG-R505GCP Main battery:Battery-Biz is a leading manufacturer and distributor of batteries, adapters and chargers and the industry's source for Hi-Capacity(TM) brand power products. Hi-Capacity(TM) products are made using the finest components available and carry a one year warranty against defects in material and workmanship. Hi-Capacity(TM) products are guaranteed to meet or exceed original specifications.