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The original was posted on /r/surface by /u/Mysterious-Ad7019 on 2023-10-30 06:32:41.

Top Sony laptop engineer who knows batteries because Sony makes their own talks tips about saving your laptop battery from early death.

1. Don’t keep the lithium laptop battery at 100% or 0% long! If at 100%, you’ll want to use the laptop to bring down the charge before leaving it sit for a long time unused. If at 0%, charge it up asap to 50%+ before letting the laptop sit for a long time unused.
2. Don’t leave the laptop in hot cars and places! Kills batteries faster the hotter they are.
3. Use laptop battery saver/limit features, which limit maximum charge to 50 to 80% if the laptop is on AC most of the time to protect the battery.
4. Ideally, cycle between 80% to 50% charge when on battery for the longest battery life.

…

So, how many laptop users don’t heed these points?

With Surfaces, battery care is important because it’s much harder to get into most of them to replace a battery (if parts are even available since Microsoft doesn’t sell batteries for the majority of surfaces in use today).