EverStart vs Super Start: Nine Car Batteries Tested, Ranked and Compared

Introduction

Car battery prices vary wildly. The Walmart EverStart Value costs $79 while the EverStart Platinum costs $189, and O’Reilly’s Super Start lineup runs from $100 to $260. Big price gaps, but does the extra money actually buy better performance? Nine group size 65 batteries went through voltage checks, cranking amp measurement, internal resistance analysis, load testing at both room temperature and 0°F, and full reserve capacity drain tests. The results revealed a clear winner, and it was not the cheapest battery.

How the Batteries Were Tested

Every battery was measured with a calibrated multimeter and an electronic tester that reads cold cranking amps, internal resistance, and state of health. Internal resistance matters because it indicates how freely energy flows out of the battery, similar to how a wide garden hose lets water flow quickly while a narrow one restricts it. Lower is better.

Cold cranking amps were properly verified by chilling each battery to 0°F for nearly 24 hours before testing. A carbon pile tester applied a 15-second load of roughly half each battery’s rated cold cranking amps, where a healthy battery should hold 9.6 volts or higher at ambient temperature and 8.9 volts or higher when frozen. Finally, reserve capacity was measured by draining each battery at exactly 25 amps to see how long it could sustain voltage above 10.5 volts. All batteries were topped off with identical chargers at the same rate beforehand.

Walmart EverStart Value: The $79 Baseline

The EverStart Value is the cheapest battery in the test at $79, rated for 650 cold cranking amps and 120 minutes of reserve capacity with only a 1-year warranty. It is made in South Korea and weighs 37.75 lb. At 75°F it delivered 681 cranking amps, beating its rating, but internal resistance was at the high end of normal at 5.32 mΩ and state of health showed only 88%, which is concerning in a brand new battery.

Under load at room temperature it passed comfortably at 10.15 volts. But chilled to 0°F it fell 125 cranking amps short of its rating at 525, with internal resistance rising to 6.84 mΩ and state of health dropping to 81%. The frozen load test was fine at 9.37 volts, and it actually beat its reserve capacity rating at 121.5 minutes, but overall the low warranty and weak cold performance make it a gamble.

Walmart EverStart Plus: A Modest Step Up

At $117, the EverStart Plus is rated for 750 cold cranking amps and 140 minutes of reserve capacity with a 2-year warranty. Also made in South Korea, it weighs 40.44 lb. It outperformed its rating at 787 cranking amps at 75°F, though 4.62 mΩ of internal resistance was merely average and state of health again showed just 88%.

The Plus passed the room-temperature load test at 10.04 volts. At 0°F it came up over 100 cranking amps short of its rating at 636, with 5.68 mΩ internal resistance and an 85% state of health. Reserve capacity came very close to its 140-minute rating at just over 139 minutes. It is a reasonable middle option, but the cold-weather numbers lag behind the competition.

Walmart EverStart Max: Strong Rating, Weak Cold Results

The $150 EverStart Max advertises 850 cold cranking amps, 160 minutes of reserve capacity, and a 3-year full replacement warranty. It weighs 40.39 lb and is also made in South Korea. At 75°F it barely beat its rating at 854 cranking amps, and 4.26 mΩ was the best internal resistance among the flooded EverStart batteries. However, state of health showed only 84% on a brand new battery.

The Max easily passed the room-temperature load test at 9.99 volts under a 425 amp load. The cold test was where it struggled badly: just 654 cranking amps at 0°F, nearly 200 cranking amps below its rating, with 5.54 mΩ internal resistance and performance suggesting 23% lost capacity. Reserve capacity was the best of the entire field at 155.4 minutes, just short of its 160-minute claim, but the cold-cranking shortfall is a real concern for winter drivers.

Walmart EverStart Platinum: The Best EverStart, an AGM Battery

At $189, the EverStart Platinum switches to absorbed glass mat (AGM) construction, claiming up to two times longer life than flooded lead-acid, with 775 cold cranking amps, a 4-year full replacement warranty, and 150 minutes of reserve capacity. It weighs 46.4 lb and is made in South Korea.

This was clearly the strongest Walmart battery. It delivered 859 cranking amps at 75°F, 84 cranking amps above its rating, with 3.5 mΩ internal resistance, the best of any battery, and 100% state of health. It led the room-temperature load test at 10.46 volts. At 0°F it was only slightly short at 746 cranking amps, holding a very good 4.04 mΩ and 97% state of health, and posted the best frozen load test result at 9.71 volts. Reserve capacity, however, came up about 16.5 minutes short at around 133.5 minutes.

O’Reilly Super Start Value: The $100 Overachiever

The Super Start Value from O’Reilly costs $100 and is rated for 650 cold cranking amps and 120 minutes of reserve capacity. Made in Mexico and weighing 41.725 lb, it carries a surprisingly short 90-day warranty.

On paper that looks timid, but the results were startling: 903 cranking amps at 75°F, an enormous 253 cranking amps above its rating, with 4.03 mΩ internal resistance and 100% state of health. It beat the EverStart Value’s load test at 10.83 volts. At 0°F it delivered 827 cranking amps, over 300 more than the Walmart Value battery, with 4.4 mΩ and 100% state of health. The frozen load test produced the best result of the day at 10.02 volts. Reserve capacity fell just 1 minute shy of its rating at 119 minutes. For pure value, this battery is hard to argue with.

O’Reilly Super Start Economy: Almost Identical to the Value

For $20 more, the Super Start Economy ($120) offers the same 650 cold cranking amp rating, 120 minutes of reserve capacity, a 1-year warranty, and Mexican manufacture, weighing 42.325 lb.

It posted 906 cranking amps at 75°F, just 3 cranking amps better than the Value, with near-identical 4.01 mΩ internal resistance and 100% state of health. The room-temperature load test came in at 10.53 volts. At 0°F it did better than its rating at 743 cranking amps with 4.88 mΩ and a healthy 96% state of health, and held 9.9 volts on the frozen load test. Reserve capacity finished at 126 minutes 40 seconds, comfortably above its rating. Given the results are nearly identical to the Value, the extra $20 mostly buys a longer warranty.

O’Reilly Super Start Premium: The Sweet Spot at $180

The $180 Super Start Premium is rated for 750 cold cranking amps and 140 minutes of reserve capacity with a 2-year warranty. It weighs 41.43 lb and is a flooded lead-acid battery, though the label does not state where it is made.

This battery delivered the standout figure of the ambient tests: 1,007 cranking amps, 257 above its rating and by far the best of the flooded batteries, with a very good 3.6 mΩ internal resistance and 100% state of health. The load test finished at 10.77 volts, well ahead of the EverStart Plus. At 0°F it still beat its rating at 766 cranking amps with 4.74 mΩ, though state of health showed 86%. It ran the frozen load test at 9.74 volts and reserve capacity exceeded its rating by about 4 minutes at 144 minutes. Its second-place overall ranking makes it arguably the smartest purchase of the group.

O’Reilly Super Start Extreme: The Overall Winner

At $215, the Super Start Extreme is advertised at 850 cold cranking amps with 150 minutes of reserve capacity and a full 3-year replacement warranty. This flooded lead-acid battery is made in Mexico and weighs 46.86 lb.

It dominated the tests. At 75°F it produced 1,106 cranking amps, over 250 better than the EverStart Max, with a fantastic 3.24 mΩ internal resistance and 100% state of health. The room-temperature load test looked effortless at 10.64 volts. Chilled to 0°F it was still the best of the field at 993 cranking amps, with 3.65 mΩ and 98% state of health, and topped the frozen load test at 9.99 volts. Reserve capacity was the one weak spot, running out about 19 minutes early at just over 131 minutes. Averaging a second-place finish across all tests, the Extreme is the pick for the coldest conditions.

O’Reilly Super Start Platinum: AGM With a 4-Year Warranty

The $260 Super Start Platinum is O’Reilly’s AGM option, rated for 750 cold cranking amps and 150 minutes of reserve capacity with a full 4-year replacement warranty. It is made in the USA with US or imported components and weighs just over 47 lb, the heaviest battery in the group.

It beat its rating at 75°F with 802 cranking amps, though 3.75 mΩ internal resistance was slightly behind the EverStart Platinum’s 3.5. The load test result was nearly identical at 10.45 volts. The cold test was its weak point: 668 cranking amps at 0°F, 82 below its rating, with 4.52 mΩ and 90% state of health, trailing the EverStart AGM. Reserve capacity came up almost 4 minutes short at 146.2 minutes, still second best overall. The 4-year warranty is the strongest in the test, and it edges out the Walmart AGM on that front.

Overall Results and Which Brand Wins

Ranking the raw data into first through ninth places, the Super Start Extreme took the overall win with an average finish of second place, outperforming the Walmart flooded batteries in nearly every category. The Super Start Premium came second at an average of 3.1, a very good battery at around $180. The EverStart Platinum tied for third with the $100 Super Start Value, though that pairing compares an AGM battery against a flooded one.

Comparing like for like, every Super Start flooded battery outperformed every EverStart flooded battery. All four Super Start flooded batteries beat the three EverStart flooded batteries in the load tests at 10.53 volts or higher, and the same pattern held at 0°F. Reserve capacity went the other way in one instance: the EverStart Max lasted longest overall at 155.4 minutes, ahead of the Super Start Platinum at 146.2 and Super Start Premium at 144.

The headline takeaway is that Walmart’s current flooded lead-acid supply has slipped in quality. Three of the four EverStart batteries showed below 90% state of health on a brand new battery, and Walmart changed its flooded battery suppliers, which seems to explain the drop. The EverStart Platinum AGM did outperform the Super Start Platinum AGM slightly, so the AGM option remains defensible, but the flooded EverStart lineup is no longer the easy recommendation it once was.

Conclusion

If you want the best cold-weather performer overall, the Super Start Extreme at $215 is the clear choice. If you want maximum value, the $100 Super Start Value delivered over 300 more cold cranking amps than the Walmart battery costing $21 less. The Super Start Premium at $180 balances price, performance and warranty almost perfectly. Among the Walmart options, the EverStart Platinum AGM is the only one that still makes sense, backed by a 4-year warranty and the best internal resistance in the test. The cheapest battery, the $79 EverStart Value, tested worst in the cold and carries the shortest useful warranty; a slightly higher spend at O’Reilly buys measurably better hardware.