Macbook Pro A1278 late-2011 orig battery OSX 10.15 runtime time-lapse

This short demo show the A1278 OSX 10.15 late 2011, (orig battery) running on battery only playing a music video which you can't hear as it was recorded using time-lapse mode on an iPhone.
It has the original hard drive and 4GB of RAM
From the time the power cord is removed runs approximately 3 hours.