There are a few primary types of vehicle batteries, including lead-acid, AGM (absorbent glass mat ... The amount of corrosion on and around the terminals is an indicator of age. The more there is, the ...

A valve-regulated lead-acid battery (VRLA) will cost a bit more but offers the convenience of maintenance-free operation, meaning there's no need to add water to the case over the battery's lifespan.

There are telltale signs that your car's lead acid battery might need water replenishment. Maintenance-free or valve-regulated lead-acid batteries (VRLA) are the types that don't need watering ...