Steam Deck Battery health on the decline

[spawnfreak73]

A few days ago it was at 100%, yesterday it was at 98%, now it's at 97%. What do I do?

[MartyWF]

Leave it run down to about 70%. Then Charge it back up normally.
I do this from time to time

[Prezidentas]

Originally posted by spawnfreak73:

A few days ago it was at 100%, yesterday it was at 98%, now it's at 97%. What do I do?

the more you look at it, the quicker it goes, just stop looking at it

[Rodomar705]

Don't worry. It's not the real battery life left in the cell. It's just an estimation of it. And on some batteries is heavily dependent on how much you charge and discharge the cell.

Even if it claims 70% you will get back all the capacity left in the cell by forcing a full charge discharge cycle and it might jump back up to the actual battery capacity left. Mine was at 106% brand new, and now is still at 103/104% after a year. It will not get that bad that quickly, although it depends mainly on how much charge cycles your cell has experienced.

TLDR: It's just an estimation and it will go back up if you to a complete cycle from 0% to 100% a couple of times.

[spawnfreak73]

Originally posted by MartyWF:

Leave it run down to about 70%. Then Charge it back up normally.
I do this from time to time

I did that, now it's backk at 100% health. Thanks.

[Lala Satalin Deviluke]

ur not liying, deck battery is as shady as nintendo and ps it purposelys loses charge so with ui updates and (charge 24 once a year(as ps states)), its a trash battery system, best to lok into how to replace as steam deck has followed said trash models

[Sinth]

Originally posted by spawnfreak73:

Originally posted by MartyWF:

Leave it run down to about 70%. Then Charge it back up normally.
I do this from time to time

I did that, now it's backk at 100% health. Thanks.

Do let it go down to 70% and then back to 100%? I hate charging anything above 85%. And how many times?

[Prezidentas]

Originally posted by Sinth:

Originally posted by spawnfreak73:

I did that, now it's backk at 100% health. Thanks.

Do let it go down to 70% and then back to 100%? I hate charging anything above 85%. And how many times?

you gonna put more wear on the battery just to make an imaginary number go to 100%?

[Sinth]

Originally posted by Škoda 14Tr:

Originally posted by Sinth:

Do let it go down to 70% and then back to 100%? I hate charging anything above 85%. And how many times?

you gonna put more wear on the battery just to make an imaginary number go to 100%?

This is what im worried about. I forgot to unplug it last night and let it charge up to 100% or 99%. The charging light was still on, on the device and after I unplugged tge device, I checked and it said 99%. I forgot my steam deck on charge about 6 times in 1 year and never to a 100%. I'm worried I damaged the battery. Battery health in desktop mode says 99%, it always was on a 100.

[Prezidentas]

Originally posted by Sinth:

Originally posted by Škoda 14Tr:

you gonna put more wear on the battery just to make an imaginary number go to 100%?

This is what im worried about. I forgot to unplug it last night and let it charge up to 100% or 99%. The charging light was still on, on the device and after I unplugged tge device, I checked and it said 99%. I forgot my steam deck on charge about 6 times in 1 year and never to a 100%. I'm worried I damaged the battery. Battery health in desktop mode says 99%, it always was on a 100.

you are wasting your time and effort. if that number was real, you could never make it go back to 100. it's just a guess from the battery controller. the battery will last you multiple years even when charged to 100% daily. after that you can replace it, it's a consumable part.

[Jake Sully]

Like one said the % in game mode is charged amount not actual battery health. To see real health check in desktop mode or use decky loader and install plug in that lets you see actual battery health and capacity in game mode.

[ShadowShifterMarlith]

Originally posted by Lala Satalin Deviluke:

ur not liying, deck battery is as shady as nintendo and ps it purposelys loses charge so with ui updates and (charge 24 once a year(as ps states)), its a trash battery system, best to lok into how to replace as steam deck has followed said trash models

Steam Deck is an example of how not to design a product...

You want to make the product right,
but you know deep down inside?

It's a bit more complicated then it looks
to do it yourself...

I want to give it a shot some time in the near future, though...
--- I want to design my own Console from scratch...

[invision2212]

My battery health is 91% after 1yr 5 months

[Jake Sully]

Originally posted by invision2212:

My battery health is 91% after 1yr 5 months

Mine went down to 94% after like 2 years but after leaving it for 4-5 days not touching it. Then I charged it and health went up to 113.3% with 43.3Wh charged and max design capacity is 40.0Wh.

[Rodomar705]

Originally posted by Jake Sully:

Originally posted by invision2212:

My battery health is 91% after 1yr 5 months

Mine went down to 94% after like 2 years but after leaving it for 4-5 days not touching it. Then I charged it and health went up to 113.3% with 43.3Wh charged and max design capacity is 40.0Wh.

It's entirely dependant on your battery charge cycle of the last days, to get a decent accuracy you need to do a full cycle a couple of times, and even with that it will still keep drifting after a while, it's quite a standard thing with battery monitoring these days.

[Alex Atkin UK]

Originally posted by ShadowShifterMarlith:

Originally posted by Lala Satalin Deviluke:

ur not liying, deck battery is as shady as nintendo and ps it purposelys loses charge so with ui updates and (charge 24 once a year(as ps states)), its a trash battery system, best to lok into how to replace as steam deck has followed said trash models

Steam Deck is an example of how not to design a product...

You want to make the product right,
but you know deep down inside?

It's a bit more complicated then it looks
to do it yourself...

I want to give it a shot some time in the near future, though...
--- I want to design my own Console from scratch...

Yet everyone who has a little bit of experience with this sort of thing is praising how well designed the Steam Deck is. Is it perfect? No, because they designed it to a price. But the Rog Ally has much worse problems despite costing a lot more.

All devices with batteries have the same problems however, its inherent to how the batteries work. The BMS is constantly trying to estimate the state of the battery based on the voltage and charging cycles, that's how all battery charging works. If you think one device is doing a better job than another, its probably just because the UI is not exposing what's really going on.