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If it looks substantial, we’ll gladly re-test a product to try and reproduce these results. Interestingly, Energizer lists the capacity of the battery at 2,000 mAh, significantly less than the capacity they achieved in our tests. This made them capable of keeping our fan running for over five hours and our flashlight shining for over four and a half.Disposable batteries are cheaper upfront, but investing a good set of rechargeable AA batteries that'll provide years of service will save you money in the long run. We found that this set of eight AA rechargeable batteries performed pretty poorly, running our fan and flashlight for just over three hours, and just under three, respectively. This metric should be slightly lower than the average capacity, as the battery’s materials degrade, but we wanted to see if any of the brands had a significant drop in performance after dozens of charges and recharges (none of them did).Among the top-performing AAA batteries in our testing, these kept a flameless candle flickering for 36 hours and a remote-control car running for 6.5 hours.Here are the three cases where single-use batteries are still the better option.Because all our charger picks rejuice each battery independently, you can mix brands when charging without any problems. However, they don’t hold a huge amount of juice. Maxi Charger cuentan con luces cambiantes de color fácilmente identificables que muestran de inmediato al consumidor dónde se encuentran sus pilas AA y AAA en el proceso de carga.

The Duracells kept our fan running for over seven hours and our LED flashlight running for three hours and twenty minutes.To calculate how long the batteries would last, fans were left running until each battery died.Lower price translates into lower charge capacityOther Rechargeable AA Batteries We TestedTenergy's value-priced, AA batteries are designed for more general use in low powered devices, like a universal remote or kitchen scale. After draining and recharging a battery from each of our top brands 50 times, we found that all three brands had retained a lot of their capacity. All that history, however, hasn’t helped them to make a great rechargeable battery. However, the Powerex Pros sell for considerably less.Rated for 1,200 recharge cyclesRichard Baguley is a valued contributor to the Reviewed.com family of sites. And in our tests, the true capacities were all too close to make a difference in real-world use. PowerOwl claims that their High Capacity batteries can hold 2,800 mAh of charge, but we found that they held just 2100 mAh.Smallest buying option contains 12 batteriesCan be charged, daily, for over three yearsWidely available online and in storesLowest price-to-performance ratioLowest price-to-performance ratioWe use standardized and scientific testing methods to scrutinize every product and provide you with objectively accurate results. After all, peer reviews are a critical part of any scientific process.Offered close to 500 mAh less power than their stated capacityMore expensive than competing productsFor rechargeable batteries, you have to consider two things: how much charge the battery can hold, and how long it can hold it for. While the Rayovac Rechargeable might be well priced, they just don’t hold much juice.holds 75% charge up to a year in storageActual charge capacity close to advertised capacityFar more expensive than similar productsThere are less expensive rechargeable AA batteries out there, but they come in packs of 12 at a minimum—this drives the price up and most people don’t need that many batteries, anyway.The EBL 2,800 mAh High Capacity batteries came close to living up to their name. A pack of eight often proves to be more than enough.Finally, while most of the batteries that we tested come mostly or fully charged, right out of their packaging, the PowerOwls are only charged to about 20% of their capacity. Paired with long-lasting NiMH Energizer Recharge ® batteries, you can charge 2 or 4 AA or AAA NiMH batteries in just 3 hours. The Energizer Recharge Universal is our best overall pick, as it provides the best balance of price and performance. We weren’t able to test this, but 1,000 recharge cycles are more than enough for most uses: even if you charge them once a week, they should still be good for about five years.Can handle 1000 recharge cyclesMore expensive than other optionsTenergy is a newer battery manufacturer that is making a splash by offering low-cost batteries with high capacities. The EBLs ran our fan for just under six hours and our flashlight for three and a half hours. Charges up to four AA or AAA batteries overnight Easily identifiable color changing lights that show consumers straight away where their AA and AAA batteries are in the charging process. It was the same with the Rayovac Pro vs. Rayovac, but definitely NOT so with the Energizer Max vs. the Industrial. They come pre-charged and in a handy plastic case that makes them easier to store.If price is a concern, AmazonBasic’s AA rechargeable batteries are for you. A set of four, for instance, could only run our battery-powered fan for just over four and a half hours, while other batteries we tested managed seven hours or longer.Sign up for our newsletter to get real advice from real experts.Duracell, the 800lb gorilla of the battery world, offers rechargeable batteries, and they’re a solid pick.