By the 1990s, energy-dense nickel-metal hydride batteries were on the market, soon followed by lithium-ion batteries.

到了 20 世纪 90 年代，市场上出现了高能量密度的镍氢电池，很快，电池也问世了。

A lot of those battery life myths you might hear apply to nickel-cadmium and nickel-metal hydride batteries.

你听到的很多关于延电池寿命的小窍门，仅适用于镍镉和镍氢电池。

Hybrids aren't true electric vehicles; their nickel-metal hydride batteries are only used to optimize the efficiency of gas-burning engines.

混合动力车并不是真正的电动汽车；他们的镍氢电池仅用于优化燃汽油发动机的效率。

Then there are nickel cadmium and nickel metal hydride batteries.

然后还有镍镉电池和镍氢电池。

The NIM ones last longer and are better for the environment.

镍氢电池续航更持久，对环境也更友好。

I got different types of, you know, and different battery sizes, AA's, AAA's, working through all the different, and there was lithium ion, nickel metal hydrate.

我收集了各种不同类型的电池， 包括不同尺寸的，比如AA型和AAA型， 涵盖了所有不同的种类，还有电池和镍氢电池。