Hybridisation of power sources can improve fuel economy, dynamics of operation, durability, safety, overall weight and cost of any given system. However, performed badly, it can have adverse effects. All-electric (electrochemical) hybrids represent the most elegant and synergistic form of hybridization, but the way in which they can and should be combined for any given application is not trivial and requires unique design in each case. A growing concern is that different electrochemical power sources are being compared in zero-sum terms with increasingly entrenched partisan arguments. In this project, we will argue that a hybridized approach will often be the best option if performed properly. The long term goal is to achieve a position where we no longer think of hybridization as a second-level design option, a compromise or a fix, but the natural way to design electrochemical power systems.