Need a battery for the Apple Macbook 13 Inch Series (White) notebook? BTI has you covered with our premium 6 cell LiPoly 5200 mAh, battery. Manufactured by BTI and built to our highest quality standards, this battery meets or exceeds the original manufacturer"s specifications. At BTI build quality is an obsession and this allows us to offer an industry leading 18 month manufacturer"s warranty. BTI...Better Technology Inside