A car battery thrown into a pool with someone could cause significant injury or even death. When a car battery is submerged in water, it creates an electrical circuit between the battery terminals and the water. This can result in a powerful electrical current passing through the water, which can cause severe electric shock to anyone in contact with it. The electric shock can cause muscle spasms, paralysis, cardiac arrest, and even death. Additionally, the battery may release toxic chemicals into the water, such as lead and sulfuric acid, which can cause further harm to anyone exposed to them.
