When your car needs a new battery, you have to walk a fine line between finding one that fits your budget and getting something that won't leave you stranded. On average, you can expect a car battery ...

How well a battery withstands repeated charge-discharge cycles in high temperatures. A higher score means better reliability and voltage retention over time. How long a battery can power a car if the ...

Consumer Reports tests batteries for life, reserve capacity, and cold performance. Some batteries perform admirably, but ...