Switch v1 draining battery in sleep mode

Fien · 2026-09-03T15:10:17+0100

I've two Nintendo Switch v1 consoles. Both are modded with a Picofly chip and runs the same firmware/CFW version (22.1.0/1.11.1).

But one console drains the battery very fast if it's put in sleep mode: after one day it drops from 100% to 17%.

The battery is still good, if I play it handheld, it last more then an hour. And it doesn't drain if turned off completely.

The other console doesn't have this problem, that one only drains max. 6% after a day in sleep mode.

What can be wrong with the draining unit?

qtafon · 2026-09-03T20:32:29+0100

Do you have airplane mode on? It drained my Switch battery like that and I figured out that Switch searches for networks constantly even on sleep mode so it's best to turn on airplane mode if you don't need wifi

Fyrus · 2026-09-03T20:59:05+0100

I had that issue at the beginning of the year, turns out it's because of an Atmosphere issue

You can try adding this bit to your system_settings.ini, that's what did the trick for me for my 2 Switches

https://github.com/Atmosphere-NX/Atmosphere/issues/2528#issuecomment-3054401265

Fien · 2026-09-03T21:33:03+0100

qtafon said:
Do you have airplane mode on? It drained my Switch battery like that and I figured out that Switch searches for networks constantly even on sleep mode so it's best to turn on airplane mode if you don't need wifi

It's not in airplane mode. Wifi is sometimes used with SysDVR.

Fyrus said:
I had that issue at the beginning of the year, turns out it's because of an Atmosphere issue

You can try adding this bit to your system_settings.ini, that's what did the trick for me for my 2 Switches

https://github.com/Atmosphere-NX/Atmosphere/issues/2528#issuecomment-3054401265

I'll try this.

I see that on the Switch that doesn't drain the battery, there's no WiFi connection configured. So maybe this is the problem on the draining one.

Switch v1 draining battery in sleep mode

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