Unfortunately every battery's life ends at some point. If you are ready to replace the battery in your 13” MacBook Air (Early 2015) you’ve come to the right
Macbook Retina (early 2015) 12 inch battery life. I have owned this laptop since January 2016 and the battery has done 340 cycles in about 2.5 years. The battery originally lasted at least 9 hrs, hardly drained in sleep mode. You could pick up the laptop after 10 days with the same battery percentage as when you left it, excellent of course.
MacBook models from early 2015 or later; MacBook Air models from 2013 or later; but the cost of the work is likely to be prohibitive. A battery replacement program for 13in MacBook Pros5 days ago · Replacing a MacBook Pro battery is not an easy task. It can be expensive, especially if the battery is out of warranty. If you are looking to replace your MacBook Pro battery, it will cost you between $200 and $400. The average cost of a new battery is around $350. Reference: macbook pro screen repair cost. Retina MacBook Model A1534 (2015, 2016, 2017) Battery ReplacementUseful Guide: M8eTl.