Consumer Reports has identified five car battery models that drivers should avoid, based on comprehensive testing and consumer feedback. The nonprofit organization, known for its rigorous evaluation standards, has provided valuable insights that can help car owners make informed decisions. Batteries are critical for vehicle functionality, and choosing the wrong model can lead to persistent issues such as poor performance and short lifespan.

According to Consumer Reports, the evaluation of car batteries involves three main performance metrics: life, reserve capacity, and cold-cranking performance. Life measures how well a battery withstands charge-discharge cycles under high temperatures, reserve capacity indicates how long a battery can run when the alternator fails, and cold-cranking performance assesses how well a battery functions in low temperatures. Each battery is scored based on these criteria, allowing consumers to compare models effectively.

Top Five Batteries to Avoid

Among the identified models, the **Econocraft 24F-E** battery, sold exclusively at AutoZone, stands out for its disappointing performance. While it is priced at around **$90**, which appeals to budget-conscious consumers, it offers average scores in battery life and reserve capacity but falls significantly short in cold-weather performance. With a cold-cranking amp (CCA) rating of only **585 amps**, it ranks as the lowest in its group. Although some customer reviews praise its affordability for temporary use, the **90-day warranty** suggests it is not suitable for long-term reliability.

Another model to steer clear of is the **Econocraft 35E**, which ranks at the bottom of the **BCI group 35**. This battery fails to deliver on longevity and has the lowest reserve capacity in its category, making it a poor choice for vehicles with known alternator issues. Like the 24F-E, it carries a **three-month warranty**, indicating limited manufacturer confidence. Despite decent user reviews, many customers report problems such as insufficient power due to its low **490 CCA**, which is considerably below the group average.

The **EverStart AGM H5** battery, another contender in this list, is offered by Walmart under its EverStart brand. While the **EverStart Platinum AGM H5/47** has received commendations for its strong performance, the standard EverStart AGM H5 has earned low marks from Consumer Reports due to its weak lifecycle performance and mediocre cold-weather capability. Although it is popular among consumers for immediate fixes, its long-term reliability remains questionable.

Another underperforming model is the **Econocraft H6-E**, which is marketed as a budget-friendly option for **BCI group 48**. Priced at approximately **$100**, this flooded battery claims to provide reliable starting power but has consistently scored poorly in longevity tests. Consumer feedback indicates that many users have experienced failures within a year, raising concerns about its durability and reliability.

Finally, the **Duralast Platinum 51R-AGM** battery, despite appearing to be a premium option with a **four-year warranty** and a price range of **$250-260**, does not perform as well as expected. While it boasts a strong starting capacity, Consumer Reports reveals that it does not maintain longevity, leading to dissatisfaction among some customers. Alternatives such as the **Super Start Platinum AGM**, which offers comparable pricing without the longevity issues, are recommended by Consumer Reports.

Making Informed Choices

Choosing the right car battery can significantly impact vehicle performance and reliability. Consumer Reports’ evaluations serve as a valuable resource for consumers looking to avoid poor-quality products. By considering performance metrics and user feedback, car owners can make informed decisions that align with their needs and budget.

For those looking to purchase a car battery, it is advisable to refer to Consumer Reports’ findings and consider models that have demonstrated reliable performance over time. Investing in a higher-quality battery may save drivers from the inconveniences and costs associated with frequent replacements.