China’s Contemporary Amperex Technology (CATL), the world’s largest producer of electric vehicle batteries, has unveiled an ...

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.

A lot of us will own a lead-acid battery in our cars without ever giving it much thought. The alternator keeps it topped up, and every few years it needs replacing. Just another consumable ...