Battery Type:Li-ionVoltage:11.36VCapacity:59.4whG3HTA049H G3HTA050H Keyboard Battery For Surface BOOK 2 13.5 Inch 1835 1832$120.00PriceQuantity*Add to CartFITS MODELSurface book 2 13.5 inch 1835 1832 KEYBOARD BRAND MICROSOFTSHIPPING INFO FREE EXPRESS SHIPPINGWARRANTY 12 MONTH