My MacBook Pro (13-inch, mid 2010, El Capitan) periodically turns off. And this is happening completely randomly - sometimes it works fine for more than a day, and sometimes turns itself off 10 times in an hour, sometimes just turns off when you turn on the laptop. TG Pro App after each shutdown displays the message "Forced - Battery current outside limit". The number of charge cycles: 859. Maybe I should change the battery?
UPD I changed the battery but the problem remained.