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If you’re going from red to full charge probably a couple hours. Plug it in when you go to bed and it will be fully charged when you wake up. It has pretty amazing battery life even if you leave it on all the time.
Sorry, there was a problem. Please try again later.The Logitech MX Keys S takes approximately 3-4 hours to fully charge. Once fully charged, the keyboard can last up to 10 days with backlighting on or up to 5 months with backlighting turned off.
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