Superior battery technology
The high specific energy density of lithium batteries and the fact that they can withstand high current drains are extremely important for marine propulsion systems. On the one hand, these properties reduce the weight and bulk of the on-board battery system; on the other hand, lithium-based battery systems ensure that the power supply does not collapse despite the high currents drawn by electric motors.
Another key advantage is that lithium batteries have no memory effect and feature high cycling stability. In contrast to conventional lead-acid batteries, they scarcely lose any charge even during months of storage.