Hybrids such as the Toyota Prius and Ford Escape use nickel-metal hydride batteries that are larger than lithium ion systems, the latter of which can pack more electric power into a smaller space.

• 象丰田普锐斯和福特翼虎这样的混合动力车使用的镍金属氢化物电池比锂离子电池系统要大，后者能把更多的电能封存在一个更小的空间内。