Most, but not all, passenger vehicles on the road use what’s called a “lead-acid battery.” Inside the sturdy plastic casing are several metal plates that are surrounded by sulfuric acid. A reaction between the two takes place, which produces chemical energy. The battery then converts the chemical energy into electrical energy, which starts and powers your car.
Can My Car Battery Freeze?
A fully charged lead-acid battery has a freezing point of below -40F. However, if the battery is fully discharged, the vast majority of the sulfate ions inside have been consumed, and what’s left is an electrolyte solution that’s comprised mostly of water—that has a freezing point of 32F.
For those who live in cold climates to come out to your car on a freezing day, and the battery won’t accept a charge current. At this point, it will need to be warmed up before it will accept a charge. Once it’s charged up completely, it won’t freeze until it’s fully discharged again.
How to Replace the Battery on a Hyundai Sonata Symptoms of a weak or dead battery on a Hyundai are: