The lead-acid battery was the world's first rechargable battery, invented in the 1800's. Why is it still used to start car's gasoline engines?

The lead-acid battery is still used to start car's gasoline engines for several reasons:

1. High Power Output: Lead-acid batteries are capable of delivering a very high power output, which is necessary to start a car's engine.

2. Cost-Effective: Compared to other types of batteries, lead-acid batteries are relatively inexpensive to produce and replace.

3. Reliable: Lead-acid batteries are reliable and have a long lifespan if properly maintained. They can also withstand a wide range of temperatures, which is crucial for their use in vehicles.

4. Recyclable: Lead-acid batteries are almost 100% recyclable. This makes them a more environmentally friendly option compared to other types of batteries.

5. Compatibility: Most cars are designed to use lead-acid batteries, making them the most compatible option.

6. Easy to Recharge: Lead-acid batteries can be easily recharged, which is a necessary feature for their use in cars.

In conclusion, despite being an old technology, lead-acid batteries are still widely used due to their high power output, cost-effectiveness, reliability, recyclability, compatibility with most cars, and ease of recharging.