Regardless of whether you pop them into a wireless mouse, an RC toy car, or a flashlight, AA and AAA rechargeable batteries almost always last longer, cost less, and result in less waste than their disposable counterparts.After spending thousands of hours researching and testing rechargeable batteries — including AA, AAA, AAAA, C, and D batteries with nickel metal hydride (NiMH) or lithium-ion (Li-ion) components — we found that many perform about the same. Most are made in China, Japan, or South Korea using roughly the same materials, so it was unsurprising that several models had nearly identical results in our tests.In most instances, EBL’s AA and AAA NiMH rechargeable batteries are your best bet. They’re widely available, last a long time, and typically cost just $1 to $2 per battery.