That's a good point. In America we call this type of deposit a "core charge." The "core" is the component you return to the store to get your deposit back.

This is done for components like starter motors, alternators, power steering pumps, batteries, and a variety of other components. The complex components are re-manufactured to like-new specifications and the less complex components are recycled to recover materials. The battery is a probably the only component where the potential ecological impact drives the cost of the deposit.

I never thought about it but it is odd car-components are the only thing most people will experience with a "core" charge. Why don't more industries do something similar? Is it just because car ownership and car repair has been such a core (no pun intended) component of American culture? That a system of recycling has been set up?

Lead actually has a pretty good scrap value.