So one day I noticed that my 2DS is going low on battery so I plugged it to charging though what was wierd was that console was looking like it's not charging and was stuck at 1%. At first I though it was issue with charging cable so I replaced with new one and still not charging. Then I did like force hard reboot (long power push) and subenly battery is at 99%. Did anything like this happened to anyone?

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[–] [email protected] 0 points 1 year ago (1 children)

Do NOT ever discharge Lithium batteries to zero. That's the worst thing to do, and you can even damage it enough to never wake up. (Even tho Nintendo used seemingly indestructible batteries in DS-3DS).

Charging to full is completely enough to recalibrate the monitoring circuit. If the battery acts erratically on lower charge levels, it's aging and there's nothing you can do. Discharging will just speed up the processes.

[–] [email protected] 0 points 1 year ago* (last edited 1 year ago) (1 children)

LiIon batteries can be damaged if they're actually completely discharged, but the ones in ds/3ds (and any modern battery really) have circuitry to prevent this - if the battery can't recover from being discharged to the point of no longer providing power then either the circuitry or the cells are already damaged far beyond the point of no return. Though, granted, discharging to that point isn't great for them, so you should avoid doing it regularly.

Charging to full isn't always enough to completely recalibrate the battery. Battery management circuits typically keep track of both maximum and minimum charges, and both can get out of whack, so only a full charge may or may not solve the problem.

I double checked all that with google, I'm on mobile so linking a bunch of sites is a pain but you should be able to verify with a few searches (if not lmk and I'll find the links later). Anecdotally I've personally had battery issues with an o3ds (and a couple other non-nintendo devices) that were solved with a full discharge-recharge cycle, but not with just charging to full, so regardless of the reasons it's undoubtedly helpful in some cases.

[–] [email protected] 1 points 1 year ago

Yes it shouldn't destroy them right away, especially if they're new. But if you already have doubts about the battery's life or monitoring, discharging it fully can make things worse, because that's just how that chemical process works.

Normally the monitoring gets reset fully by charging the battery and leaving it on the charged for a few hours. Which is why people don't encounter errors too often, since most charge things overnight.

It's known that Ninty uses some damn good batteries in the DS-3DS so they tend to fine with discharging, but it's not a good general advice.