Discussion SX Core / Lite Battery drain

Thanks for the clarification!

 

These are pretty strange things to say.

Are you sure the power is off? What VCC rails are still powered in this 'power off' state? How did you measure it?
And to compare, with a 'unmodified' Switch, what power draw do you measure for 'power off' ?

 

Lab power supply set to 4.2 v conected to cut from dead batery cable + 10k resistor betwen battery detect grey wire and gnd, when is properly off moded or no moded no power draw, power off from horizon with core in v2 normal switch aprox 0.003 , power off from horizon os ,v2 sw with no core, nand clip on mb, flex still on tegra no power draw.
V1 with core probably power off corectly didn't test yet, this all i tested lets say i simulated a battery.

I asume 3.3 rail stays on , i hope this helps, for my is case close , my customer now is happy and i now what to tell to the next one if he/she prefer to keep the sw powered off instead off sleep mode.
Maybe I was to harsh, the core works nice ignoring this litle problem.


"Say Hello to My Little Friend"

 

It looks like a software issue. Here's to hoping it gets fixed!

 

the switch has always lost battery power even when turned off, its nothing to do with the chip, its cheap shitty hardware, its nintendo

 

I've compared the current draw on a Lite with SX Lite installed vs without SX Lite installed, scoping the voltage drop with a 0.25 ohm resistor in series on the battery positive rail. Used latest SXOS 3.0.4 with latest SX Lite firmware.

Selecting "Power off" from the Nintendo OS menu and then waiting a few seconds gives the same current draw of nothing for both modded and unmodded Lite. So it looks there's not really a battery drain issue using SXOS on a SX Lite.

So I'm not seeing any issue here

 

I also notice bigger battery drains with switch lite compared to my switch Mariko in standby switch lite drains quite a lot powered off drains too but a lot less.

 

Finaly i have something to show dummy battery test on lite
Os has a bug ? i'm not a developer, i'm not a pro.
When my crap power supply is showing 3ma is no drow,6ma is drowing i will not buy expensive power supply to show perfect values.
Geniune boot power off corectly.
Thank you and i hope i didn't create to much trublle.
People with foulty switch or foulty battery ignore this thread.
So you can use geniune boot for now and then from ofw you can power off completly, if for some resson you don't whant to use sleep mode like most of the users.

 

What resistor value are you using? And what does your circuit schematic look like for measuring the current draw?

 

7.6kohm between bat detect test point and gnd( to full bq ic he has a battery) , vcc from batery test point to lab power supply and gnd from power suply conected to gnd on switch, no battery connected, power supply set in this case to 4.7v not stable on 4.2v.
I just watch the power supply display, if i boot cfw and power off i see 6ma on display if i power on with geniune boot option and power off from ofw i see 3ma on display , my power suply shows 3ma with nothing conected.
So i considered a 3ma drow if you power off from cfw.

Is not a big deal.

This thread made me so mad and instead off thanking tx i used harsh words, users started to think i replaced the batery, or the install is wrong, and so on.

My test is wrong ?

I dind't tell him about power off after geniune ofw boot yet.
Emeraldu say if is powering off his mariko sx core force shotdown down or the fix he found after 2 days the procentage don't go to 93% from 100% but ofcourse i don't trust what the horizon displays, but i seems happy now with what horizon displays.

 

I don't think your test is wrong. Just not been able to reproduce it. The 3mA current draw is pretty small, so it might be getting lost in the noise floor in my test setup. I'll try a setup similar to yours to test

 

OK, some new evidence that supports your test:

Booted with SXOS cfw button, select Power Off from Nintendo OS: the eMMC CMD shows 68mV
Booted with SXOS genuine boot button, select Power Off from Nintendo OS: eMMC CMD shows ~0mV

So there is a difference, confirmed

 

You shall contact TX responsibles with your evidence and your test procedure so they can fix it in a future SX OS version.

 

Emeraldu reported already, i reported now via contact form to tehnical departament, the video is not clear enough to see what i press on screen so i deleted, but i will try to make a better one if is needed.

Thank you @Jason for confirmation and info.

So for now if you want true power off , power on again,press vol + go to sx core menu ,geniune boot, and power off from ofw, next boot will take more time.

 

Correct. The best practice for Li-Ion batteries is to drain to 20% and charge to 80%. That will give you the longest lifespan. It's also important to use slow chargers whenever possible. Fast charging creates heat and wears down the cells as well.

It's hard to maintain this with something like a Switch. I have a portable battery and I use that to keep it from dropping below 20%. The dock uses a fast charger, so if I plan on charging overnight, I use a USB C cable on a slow charger with the proper ratings.

 

According to Team Xecuter, the battery drain coming from SX Core/Lite modchips is now fixed with SX OS v3.0.5:

Anybody here wants to confirm by formal test that the battery drain is really fixed?

 

Guys i've just installed SX Core on my Mariko unit.
Apparently no problem: created emunad and my backups play well.
But here comes the problem.. When shutting down the console (not standby/sleep) the screen keep blinking and the console doesn't turn off.
I need to force the shutdown with 10 second press on power button.
Video attached.
This happens only when in the CFW from the emunand.
Whan on OFW from sysnand the console shut down regularly.
Could this be linked with the problem of the OP?

https://streamable.com/5r6re4