The Surface System Aggregator – Firmware 241.1.139.0 helps improve battery life.
YES! The battery was not drained after shutdown since upgraded Firmware 241.1.139.0.Wow! I LITERALLY just installed this firmware update tonight even though I never experienced the issue, but good to know that it fixes the "75% battery after charging to 100% and shutting down" issue!
Awesome!
The battery drain seems still to be an issue for the surface pro 4, at least to my SP4 i5 8 GB RAM after latest firmware update. How can this be? Of course I will never buy a >1000 € windows laptop again before this issue is not resolved, this is more than a bad joke and looks like planned obsolescence.