Toyota launches Aqua hybrid with bipolar nickel-hydrogen battery

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Toyota has announced the release of a new model for the Japanese market. The Aqua (known as the Prius C in other markets) is said to be around 20% more fuel efficient (WLTC) than the previous-generation vehicle.

With a fuel efficiency of 3.4 l/100km, the Aqua’s powertrain consists of a highly efficient 1.5-liter Dynamic Force engine and an optimized HEV system. It is claimed to be the first vehicle to use a high-output bipolar nickel-hydrogen battery as an electric drive battery.

The bipolar batteries have a greater active surface area, so the battery has a lower resistance, which enables the flow of larger currents and leads to increased output. The increased output of the bipolar nickel-hydrogen enables improved accelerator response and powerful acceleration from low speeds. Alongside this, the vehicle’s battery-powered range has also been extended.

Compared with the previous-generation Aqua nickel-hydrogen battery, the latest bipolar nickel-hydrogen battery delivers 1.5 times greater output per cell and has packaged 1.4 times more cells in the same-size area.

Since the launch of the first-generation Aqua, and with over 1.87 million units sold, Toyota estimates the vehicle has been responsible for a 12.4-million-ton reduction in CO2 emissions.


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After spending the past six years working as a mechanic for various motorsport and high-end performance car companies, Callum recently joined UKi Media & Events as an assistant editor. In this role he will use his vast practical knowledge and passion for automotive to produce informative news pieces for multiple vehicle-related sectors.

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