this post was submitted on 09 May 2025
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Steam Deck
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The logic is deeply flawed though.
Keep your battery at 80% to preserve it's health, because Lithium batteries prefer that. Sure. But here's what it effectively means:
Keep your battery forever stuck at 80%... to avoid losing battery capacity... so to avoid having less battery runtime you limit your battery runtime... Thus suffering today the consequences you feared in the future.
That's less of an issue with devices you use in battery mode all day, but the Deck sits on the docking Station most of the time and constantly getting held at 100%
No, I'm not suffering the consequences I'm fearing now. Having 80% capacity is enough to last me through the day, what I'm fearing is when the capacity drops below 60%, 50% or even less which I can greatly delay by only charging to 80%.
Additionally, I'm not forever stuck at 80%. If I know I will need more capacity, I can always disable the restriction for the next charge.
The logic isn't flawed, your priors are. You're assuming that people are constantly on a cycle of charging their battery to the limit, running it down low, and then charging it again. If you mostly play docked or with a charger plugged in then capping the battery at around 80% prolongs the battery runtime for when you do turn the limit off and want to use the full battery.
If you mostly play fully charged and stationary, then lowering the charge limit means you have more future opportunities to experience the fully battery runtime when you disable the setting.
There's absolutely no way a setting buried in a menu is designed to be constantly enabled and disabled based on when you're using the device docked or not.
Otherwise, the toggle would exist in the quick access menu.
That's also not how it works on laptops that offer it, so I doubt the idea is having users constantly toggling it.
I mean, I was just gonna unplug it at 80 and plug it back it at 40.
Beforehand I couldn’t just leave it cause it would go to 100%.
If your referring to always keeping it plugged in, can’t I cap it at 60% then?
No, I'm referring to the fact that unplugging early to avoid decreasing the battery health and therefore capacity makes no sense... Because you're decreasing the battery capacity by only using 80% of it's charge
Short term vs long term gains.
What about only charging to 80% until I actually go on a road trip?
It’s same with electric cars, there is day to day mode and road trip mode.