This isn't news. A battery life of 2.5-6 hours was announced by Nintendo on January 12th, shortly after Nintendo said that more demanding games like Zelda will drain the battery in about three hours. If you ran into anyone on this forum who said otherwise, you already had Nintendo's official benchmarks to point to.

 You will need to charge it every day.

Oh No!!!!! People will have to charge it everyday!!!!! Just like they do with all of their current portable devices

Most devices can get more than 2 hours of charge. Just wait until more demanding games are released, but oh no be offended some question Nintendo.

You know, the thing is Nintendo said 3 hours, not 2.5. So, you can imagine how defensive they were beeing. 

For example: https://www.engadget.com/2017/01/13/nintendo-switch-battery-life-zelda/

Though i still doubt the battery will last even 2.5 hours with an online game like mario kart. It's unrealistic to expect it to last longer aswell, unless you are playing a really crappy indie or classic game.

It IS a problem, wether fans wish to recognise it or not. You will need to charge it every day. Like the commercials you see with lots of people playing multiplayer outside, it just won't happen with this kind of battery life. Someone will always forget to have re-charged and will stop bringing it. 

This will only get worse with time. So, if this is supposed to be a sucessor to the 3DS aswell, wich i think it isn't, it desperatly needs a revision already.

You really have fun downplaying, don't you? Is battery degradation suddlenly an exclusive problem of switch? Wasn't Vita or 3DS affected by this too? What about those Vita games that lasts barely 2 hours, were those 1 hour after 1 year of degradation or that is just a Switch thing? Isn't maybe less of a problem here since this is an hybrid and you may not be playing it as a portable always unlike on Vita/3DS case? And also, honestly, don't you have anything more productive to do? Is not like your trashing is gonna prevent anyone from buying it or is gonna change anyone minds, is just noise.

....Uh, can you dumb that down for be a little? I don't understand what you're saying.

Im saying Nintendo will have less games in their library for the Switch than they did for the 3DS (because they will lack key third party which has pushed the generation). If more AAA multiplatform games were used on the switch you would see two and a half hours or less for a lot of games. When I get my switch I know I am keeping that thing plugged in as I favor the handheld look. 

Zelda manages to run for three hours on Switch, so where exactly would be the problem? No, I cannot imagine people being defensive over it. If you faced hostility in the past few weeks, then that's most likely due to some inane reasoning you presented.

I wouldn't expect people to play their Switch online in the wild (meaning away from power outlets). How many people do that with their 3DS or Vita? Maybe 0.01% if we use a highball estimate?

If we assume a scenario of people getting together to play local multiplayer with several Switches, one logical assumption to go with that would be that at least one person is always going to have a charging cable with them, because the likelihood that all people of the group are oblivious is extremely low. That you believe otherwise would be why you face hostility; it's not because people are defensive, it's because you are trying to pass off nonsense as sound reasoning. Also worth of note, getting used to charging Switch at home should be quite easy for people, because its natural fit is the dock.

I thought that you made this thread because you wanted to have a talking point why there will be a separate 3DS successor, something that you insisted on in recent weeks. But there won't be one. Switch's battery life is acceptable. If people are able to get ~4 hours out of a medium game, then that falls in line with the original 3DS, a system that sold well enough.