E EGOWAY 37Wh/5100mAh Replacement Battery A1245 A1237 A1304, Made for Early/Late 2008 Mid 2009 MacBook Air 13 inch Battery Type: Li-Polymer; Voltage: 7.2V;Capacity: 37Wh; 4 Cell, with Free Screwdriver. 100% New from Manufacturer, High Performance 37Wh A1245 Replacement Battery. Overcharger and Discharger Circuit Protection, CE-/FCC-/RoHS-Certified for safety Warranty: 18 Months Warranty, 30 days money return guarantee,24 x 7 email support.