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    Duracell 49 H8

    Car Batteries / Group 49 (H8) car batteries
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    49 H8
    Duracell 49 H8
    Become a member to compare products & get access to digital ratings.
    We investigate, research and test so you can choose with confidence.
    Become a Member

    Become a member to compare products & get access to ratings.

    We investigate, research and test so you can choose with confidence.

    Become a Member

    Become a member to compare products & get access to ratings.

    We investigate, research and test so you can choose with confidence.

    Become a Member

    CR's Expert Take

    How did it perform in our expert lab testing?

    Overall Score

    The Overall Score for this model is derived from our expert lab test results.
     Unlock ratingswith membership.
    Current Range of Tested Car Batteries
    What goes into the Overall Score?
    Life
     /  5
    Reserve capacity
     /  5
    Cold Weather Performance
     /  5
    Warranty (mos.)
     /  5

    About

    The Duracell 49 H8 is part of the Car Batteries test program at Consumer Reports. In our lab tests, Car Battery models like the 49 H8 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.