Energy · 1989

Nickel-metal hydride battery

A hydrogen-absorbing alloy replaces toxic cadmium and holds more charge.

NiMH cells reached consumers in 1989, building on hydride research at Philips and Stanford Ovshinsky's work. They powered early laptops and the 1997 Toyota Prius, the first mass-market hybrid car.

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What it built on 1

Voltaic battery 1800

Related measurements

The dashed line marks when it first worked.

Cost of memory and storage Latest: Memory: 1.09k $/TB (2023) Source: Our World in Data