Duracell has changed hands a few times, but today, it's owned by Berkshire Hathaway — the same conglomerate behind Dairy ...

Costco Wholesale shoppers will likely be very familiar with Kirkland Signature, Costco's in-house brand. The superstore sells ...

How long a battery can power a car if the charging system fails. A higher score reduces the risk of failure if accessories are left on. A higher score means more reliable cold starts. This test ...

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 ...