Lithium-ion battery for Onean electric surfboards with a capacity of 1.5 kWh and weighing 14 kg. The battery has a durable waterproof case and is equipped with a BMS (Battery Management System) that protects it from overheating, short circuits, and deep discharge. Thanks to its removable design, it can be easily removed from the compartment and fixed with one click. The battery has a nominal voltage of 44.4 V. The maximum battery life is approximately 350 cycles. Suitable for all Onean models.