Macbook turns off at 50% battery, what should I do?

Question

macbook

Macbook turns off at 50% battery, what should I do? Most recently, it was cut down at 40%, but today it was already passed out at 60%. I called the service center in the city, they rolled out 2700 for the current diagnostics, and if the battery is changed another 10k). Here I would understand to do something, change the battery, then I myself can :). Yes, and for a week to hand over a working tool to them is also not possible.

Mac Air 13 2017...

Answer 1

Change battery. She took the finish
Akkum here www.detaliapple.ru/collection/a1466/product/akkumu...
Another set of screwdrivers to replace www.detaliapple.ru/product/nabor-otvertok-dlya-zam... The battery
is slightly smaller in capacity, approximately. Well, that is, from the old, when it was fresh, you could squeeze 7 hours, this is only 5 with something