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Hi Which battery can you advice? Regards Bernardo

Depending on where you live you may have a hard time getting a new battery. Here’s the iFixit MacBook Air 13" (Late 2010-2017) Battery product but they can’t ship by air so you may need to check the other iFixit storefronts that is closer to you. IFIXIT Store Australia - HomeIFIXIT Store Canada - HomeIFIXIT Store Europe - HomeIFIXIT Store Russia - Home Lastly here’s the guide to put it in: MacBook Air 13" Early 2014 Battery Replacement