Chosen Solution
Hello, I have MacBook Pro 2013 late 15” with 16 GB DDR3 RAM, 500 GB SSD and GT750m GPU. I have macOS & Windows (BootCamp) on the system. Lately, it started to randomly shutdown while on battery while running macOS. I made clean install but same problem is occurring. I think it is something with cooling on macOS side, because in BootCamp I can play games on battery or plugged in and it never shuts down. I did reset the SMC and same thing happening in macOS side. Seems like don’t having charger plugged in cause fans on macOS speed slower or do other things. I installed Mac fan control and turn all fans on maximum. It still shouted down. Any advice here? Mac is my main machine and if I can’t take it somewhere where there is no power outlet making it useless.
more idle temps
Macs typically the log the reason for random shutdowns, especially hardware related ones, you can try following this guide to see if it gives any more insight: How to determine Mac shutdown causes
