For quick turnaround, lithium wins hands down. Recharge Time: It takes 3 to 7 hours to recharge a NiMH battery, while a lithium one fully recharges in an hour or two. Motorized products, from remote-control toys to electric toothbrushes, run better on lithium. Lithium batteries have the advantage in devices where power supply is key. Performance: Lithium batteries put out 1.5 volts of energy, while NiMHs put out 1.2 volts. That’s why they are perfect for TV remote controls, wireless keyboards, digital cameras and camera flashes, wall clocks, and video-game controllers. NiMHs also retain their power better when they’re sitting idle on a shelf. Longevity: NiMH batteries generally outlast lithium ones. In 2020, a handful of Chinese companies started selling a rechargeable version of lithium batteries. NiMH batteries are more popular and have been around a while. Rechargeable AA and AAA batteries come in two main types: nickel metal hydride (NiMH) and lithium. What to Look For With Rechargeable AA and AAA Batteries I have reviewed and used many rechargeable AA and AAA batteries over the years. I’m also a judge for the Consumer Technology Hall of Fame. News & World Report, CNET, Rolling Stone, and Sound & Vision. The Expert: For nearly 40 years, I've been reviewing consumer technology for publications including U.S.
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