Ellery Davies is correct. Modern battery charges behave in a way to mitigate these issues. But they can’t completely eliminate them. Simon Khoury is also correct saying that keeping the battery between 20% and 80% will significantly prolong its life. But the important question is, what is the impact of shorter battery life?
The battery in my Dell Latitude laptop is easily replaced. I guess a new battery might cost $100 or so. When the battery stops working, I’ll look at how old the computer is and what shape it’s in, and either decide to order a new battery or buy a new laptop. I’ll probably decide on the new laptop. “Babying” the battery won’t make much difference, if any.
The battery in my Microsoft Surface Go is not user replaceable. I’m not sure whether Microsoft can replace it. For me, it’s worth the money and effort to buy a timer. I know it takes 15 minutes to add 10% charge. (This “rule”, whatever it is for your computer, will change dramatically above 80% charge. It takes a lot of work to get that last 20%. The charger has to slow down so the battery doesn’t overheat.) When the battery gets low, I set the timer and plug it in. If that’s not feasible because I’m traveling or whatever, I try not to worry about it too much.
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