What is the difference between Nickel-Metal Hydride and Nickel Cadmium batteries?

Nickel-Metal Hydride (Ni-MH) batteries provide up to 200% more power than Nickel Cadmium (Ni-CD) rechargeable batteries, will significantly outperform alkaline batteries, in most digital applications and will greatly outperform Ni-CD batteries in high-drain applications. Ni-MH batteries have a rechargeable life of up to 1000 cycles, 25% more than Ni-CD. Ni-MH batteries have no Cadmium added.

Cadmium is hazardous to the environment. More.

Nickel cadmium came out first. Nickel-metal hydrides are replacing them, because they don't suffer from the memory effect. More.

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