I stumbled upon this when working from a cafe and the 2019 MacBook Pro battery went from 100% to 2% in under 2 hours. When I checked Activity Monitor's Energy t

I stumbled upon this when working from a cafe and the 2019 MacBook Pro battery went from 100% to 2% in under 2 hours. When I checked Activity Monitor's Energy tab, WhatsApp was by far the largest consumer of energy, despite me doing absolutely nothing in that application (not receiving a single message during that time).