The DieHard
Advanced Gold AGM 50749 is part of the
Car Batteries test program at
Consumer Reports. In our lab tests, Car Batteries
models like the Advanced Gold AGM 50749 are rated on multiple criteria, such as those
listed below.
Life:
How well a battery withstands repeated charge-discharge cycles in high temperatures. A higher score means better reliability and voltage retention over time.
Reserve capacity:
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.
Cold Weather Performance:
A higher score means more reliable cold starts. This test measures voltage after 15 and 30 seconds of cranking at 0ºF, using half the average claimed CCA, or Cold Crank Amperage.