When high-performance, quality and longevity are your battery upgrade criteria, Newertech 6W Replacement Battery for 13″ MacBook Air (2010-2017) is your answer. NuPower batteries are designed to meet and exceed factory specifications. With renewed life, you can listen to more music, watch more videos and get more work done between recharges. To ensure your confidence and satisfaction, these high-quality are backed by a one-year warranty. NuPower is engineered to perfectly complement the fit and finish of your Mac® notebook. They also offer full compatibility with applicable OEM sleep and power reduction modes. Each new battery includes an informative recycling page that details the options you have for the disposal of your old one. NuPower upgrades solutions are environmentally responsible and feature RoHS certification that they are free of lead, mercury and cadmium, PBBs and PBDE.