Replacement Sony PCGA-BP505 battery by Amstron provides reliable performance in your Sony laptop. This precision-engineered Lithium-Ion battery is designed for use in the Sony Vaio PCG-X505 series of notebooks. Take your work on the road with you without sacrificing performance and productivity with Amstron brand Sony laptop batteries. • Chemistry: Li-Ion • Rating: 11.1V2000mAh • Will Meet or exceed original specifications • Warranty: 1 Year