Chosen Solution

Hi everyone, I bought this mac and it does not stay connected on the battery, only with the charger, I removed the cover and verified that it has a missing component, could you help me to identify this component

This is Q7155, which is a P channel MOSFET with reference SI7137DP. Google this code and you will find places to buy this from. Missing this would explain why it isn’t running off power, just strange why it has not been replaced by it’s previous owner, since they have the required tools.