A few years back several research indicated that blue light can be harmful for sleeping. It interferes with melatonin production in the brain. Are you reading a smartphone or tablet at night? Maybe even...
ThinkPad X1 Yoga battery replacement - Lenard's corner on the Web says:
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Where can I get these for my notebooks? :D
The @Lenovo #ThinkPad #X1Yoga (2nd gen) wave keyboard is just fantastic to look at! A marvel of engineering. #LenovoIN