![]() ![]() Optima has more than 40 years of experience and a long-standing history of innovative automotive engineering design when it comes to batteries. The brand offers two-year full replacement warranties on its batteries and they are generally quite affordable and lower in price compared to its competitors. The brand is known for wide availability thanks to its widespread manufacturing and they are noted for reliable high-quality products. across different manufacturing facilities in 17 countries. ![]() Odyssey batteries are owned as a subsidiary of EnerSys Energy Products Inc. There are a lot more technical differences between the Odyssey and Optima batteries, so let’s take a closer look to see which is going to become your new favorite. They offer good reserve capacities and cold cranking amps too which is great for cold starts, but Odyssey batteries have slightly better specs, and although they are a little more expensive, they are worth the extra spend. Both Odyssey and Optima car batteries are popular and have become a lot of people’s first choice when their batteries need replacing.īoth the Odyssey and Optima batteries are high-end and resistant to tough conditions as they are sealed systems with shock and vibration resistance. A quick check of the car battery Ratings can ensure you get more performance for your money.Making sure you choose the right car battery can make a huge difference to all areas of your vehicle as a good battery is crucial to so many tasks in your vehicle. So, it is crucial to check the Ratings right before you buy, rather than count on data from a year or two ago. We do see significant variation in how models perform year to year, reflecting production changes. If you're shopping for a battery, the best bet is to check your owner's manual for the size you need, and refer to our ratings for one that suits your needs and budget-regardless of brand. All other AGM batteries in this test scored much better in the life test.ĪGM batteries also typically cost more than conventional designs, and only one other battery in our Ratings carries a higher price than the $180 we paid for the DieHard Advanced Gold 50748. Our test samples of the DieHard Advanced Gold 50748 were the only AGM batteries that did not to survive on average 13 weeks or more of the life test, and they would not have lasted even through the old 10-week test. The failures are especially noteworthy because the DieHard Advanced Gold is an AGM (absorbed glass mat) design, which typically makes for a more rugged and longer-lasting battery than a conventional battery. Two more examples purchased for retesting also failed. Two samples of the DieHard Advanced Gold 50748 in Group 48 failed this test after just six and seven weeks-not even halfway through our stringent test regimen. We extended the test from 10 to 15 weeks last year, to more accurately reflect battery life over a longer period. This simulates the taxing cycles batteries go through while subjected to high underhood temperatures. One of our evaluations, called a "life test," involves repeatedly draining and recharging batteries while they are immersed in 167-degree water-a protocol based on an industry test. Visit our car battery buying guide for buying advice and complete Ratings. (The cracks observed in our previous test caused no loss in performance, but previously resulted in a lower score.) (See which car batteries we recommend.)įor instance, a DieHard Advanced Gold battery now tops the top-terminal Group 65 category used in many large vehicles, with no evidence of the small case cracks seen in our last test. ![]() Based on our findings, it is best to cast aside brand loyalty, and instead focus on CR's test results. The greatest inconsistency comes from DieHard, which makes both the best and worst performers in two of six common sizes. But our latest Ratings make it easy to find the best one for your needs and budget, no matter what you drive.īig-name battery brands DieHard (Sears and Kmart), EverStart (Walmart), and Interstate all top our Ratings in some group sizes, but they are at or near the bottom in others. Our latest tests show that shopping for a car battery by brand name alone can be a big mistake, both in terms of performance and in cost.
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