Either 100% or 0% is not very good for a lithium-ion battery. Around 50% is usually best, so I'd aim for that. If you aren't going to use it for long time, charge it to around 50% and put it in battery storage mode.
this post was submitted on 12 May 2025
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How long is considered a "long time" for storage purposes?
If it's important to you, I'd say check it every month. If it's not very important to you, check it at least every 6 months.
looks at my PSP1001 with concern...
A recent update added the option to limit the deck's max battery charge in Settings>Power. If you want the deck to be ready to go, I would recommend capping the max charge at 60-80% and leaving the Deck plugged in. Alternatively you can put the deck in battery storage mode.
Valve's basic use and troubleshooting page has a section on long term storage that covers how to put the Deck into battery storage mode.
That must be a beta release of the OS, I checked my deck which is on the latest stable release and I don't have that option.
Oh, yeah you're right. It's a beta feature, although it will hopefully come to stable pretty soon.
The decky plugin powertools can also set a limit if you don't want to wait.