Nickel Metal Hydride Battery

World's top level input/output to weight ratio - light weight

In addition to being light-weight, the high power output nickel metal hydride (Ni-MH) battery used in the HYBRID SYNERGY DRIVE system provides a high input/output to weight ratio. (power output in relation to weight)

The battery pack and its components have been redesigned for the new Prius. The cooling system for the battery cells including the cooling duct is optimized, while components such as the system main relay are designed for reduction in size and weight.

Furthermore, the system maintains the battery charge at a constant level at all times by monitoring and computing the cumulative amount of discharge under acceleration, and recharging by regenerative braking or with surplus power under normal running conditions.

The hybrid battery (traction battery) has a limited service life. The lifespan of the hybrid battery (traction battery) can change in accordance with driving style and driving conditions.