Newertech NewerTech NuPower 37W Battery (for MacBook Air 2008-2009) NewerTech NuPower Battery For MacBook Air 2008-2009 A Perfect Fit Solution NuPower batteries are engi… MSRP: Was: Now: £73.00 (Inc. VAT) MSRP: Was: Now: £60.83 (Ex. VAT)