However, hybrid cars have only been viable since the first Toyota Prius in 1997. (Automotive experts can pedantically point ...

Cellphones of the past came equipped with rechargeable nickel-based batteries with (Ni-Cd and NiMH). In the past few years, however, most rechargeable batteries used in phones are Lithium-based.

Nickel-cadmium and nickel-metal hydride are alternatives ... It's a lot more cost-effective to use rechargeable batteries for toys and accessories than to burn through disposal alkaline batteries.