A 250kW maritime lithium-cobalt battery called SAFE-Li has been released by Sealence, which states it has best-in-class safety characteristics and energy density.
Designed for application to electrically propelled yachts measuring 12m-18m in length, the battery benefits from an 83kWh capacity and 250kW of power at 450V. The battery measures 900 x 800 x 600 and weighs 550kg.