Car batteries contain heavy metals and chemicals that can be dangerous to individuals and the environment if not disposed of properly. Here are some ways to dispose of old car batteries safely:

1. Recycling: Most automotive and household batteries are recyclable. You can return the core of your original battery to a participating auto parts store, or drop off your old battery at a battery retailer or a local hazardous waste collection program. Batteries Plus accepts used car batteries and other types of batteries at their 700+ locations throughout the U.S. . Advance Auto Parts also has a recycling program where you can drop off your old lead-acid battery at any of their stores.

2. Exchange: When purchasing a new automotive, marine, power sport, or small equipment battery, the seller may require a core or your used battery in exchange.

3. Contact a repair shop: If you have a decent relationship with any repair shop, they may take your old battery and dispose of it properly.

Its important to note that you should never just throw an old car battery in the trash, as it can pose a serious risk to the environment and your health.