Yeah, the concept is nice, but it tells me that the Big Bang doesn’t explain what happened before it (the leading hypothesis is that the Big Bang started time, so there is no “before”) and sources a Wikipedia article on spiders. Then, it cites the common myth about Daddy Longlegs being highly venomous, says that that wasn’t dispelled until 2020, and then cites a fucking BuzzFeed listicle.
Yeah I think that the “you have to discharge your batteries entirely before charging them” would be a better fit, even though it wasn’t false at the time, but the technology changed
With modern Lithium ion batteries its because as their capacity decreases over time the BMS can’t always keep up and recover the 100% point unless you’re occasionally draining it all the way. This can result in someone charging their battery to say 97% and leaving it for hours to reach a 100% it will never reach. This is potentially unsafe as it heats up the battery.
This is correct with unmanaged batteries. Batteries with a BMS however will never get below whatever voltage is set as their 0% unless allowed to sit at 0% for long enough that e n t r o p y occurs and the charge slowly dissipates over time. This will happen even with a fully charged battery left to its own devices (ba dum tss) for too long.
The point of the BMS is to manage the health of the potentially dangerous lithium batteries, and as long as they are used within spec it should keep voltages from getting so low the batteries enter a state of deep discharge, as well as prevent overcharging due to imbalanced charging rates or other similar issues.
Used is the important word here. A battery must be used to maintain it’s health. A battery must also not be abused to maintain its health.
Now none of that touches on what you said, but was important background for this to make sense: The BMS will report to you whatever values it deems safe charging and Discharging limits based on factors like internal resistance and temperature. As a result 20-80% of an unmanaged battery is close to 0-100% of a managed one in new condition because the BMS will cut power before unsafe discharge limits are reached, and will stop charging to prevent overcharge once those limits are reached.
Just put in 2010 and most of everything it said is incredibly obvious. Plus some of the dates of updated sources seem really incorrect. For example, one of them is it is a myth that most oxygen comes from trees, but I very distinctly remember my math teacher of all people saying in 2006 or 2007 that when he was in school he corrected people that it’s mostly from plankton. And even if I’m misremembering this, he definitely said something about it being from plankton in those years, but it says the updated sources are from 2020.
It says that it is a myth that the big bang theory explains where the universe came from but in 2020 we found out it doesn’t explain what came before. Like… No? That’s always been what it is. Sure, it’s always been a Christian talking point to sort of say that, but then why say 2020?
But I guess it’s hard to really gauge what should and shouldn’t be included. I remember my 5th grade teacher telling me that Robert E. Lee was an honorable man. I don’t really remember exactly what all she said and if she got deeper into Lost Cause rhetoric than that, but she definitely said Lee was a “good man.”
I think it’s a neat idea but probably needs more contributors and for people to be a bit more critical with things. For example, an obvious one, I don’t see it mention that Pluto is no longer classified as a planet. That would be a great thing to mention, especially if you talk about things we used to consider planets but don’t any longer. Ceres is another example of this. In 1801 it was discovered and considered a planet until sometime in the 1950s (it seems like it wasn’t an all-at-once shift) when it was considered an asteroid despite its planet like appearance. Now it is considered a dwarf planet like Pluto.
https://www.schoolmyths.com/
It’s a collaborative site.
I like it, though there wasn’t a single one of the false facts that I was taught in schools.
“Dinosaurs shed their skin all at once like snakes”
“Girls are naturally not as good at math as boys”
I don’t mean to be rude, but If this was taught in your school, everyone around you is probably a moron.
Yeah, the concept is nice, but it tells me that the Big Bang doesn’t explain what happened before it (the leading hypothesis is that the Big Bang started time, so there is no “before”) and sources a Wikipedia article on spiders. Then, it cites the common myth about Daddy Longlegs being highly venomous, says that that wasn’t dispelled until 2020, and then cites a fucking BuzzFeed listicle.
Buzzfeed out here doing the real work
The fucking MythBusters did an episode on that like 20 years ago.
Yeah I think that the “you have to discharge your batteries entirely before charging them” would be a better fit, even though it wasn’t false at the time, but the technology changed
You still occasionally should, let it go all the way to dead, but for calibration reasons instead of safety reasons
That was the original reason. Ni-cad batteries develop a “memory” if they aren’t fully discharged loose capacity.
With modern Lithium ion batteries its because as their capacity decreases over time the BMS can’t always keep up and recover the 100% point unless you’re occasionally draining it all the way. This can result in someone charging their battery to say 97% and leaving it for hours to reach a 100% it will never reach. This is potentially unsafe as it heats up the battery.
Edit: Autocorrupt beansed up my comment
I was always told to always leave it charged from 20% to 80% and draining it to 0% was a bad thing.
This is correct with unmanaged batteries. Batteries with a BMS however will never get below whatever voltage is set as their 0% unless allowed to sit at 0% for long enough that e n t r o p y occurs and the charge slowly dissipates over time. This will happen even with a fully charged battery left to its own devices (ba dum tss) for too long.
The point of the BMS is to manage the health of the potentially dangerous lithium batteries, and as long as they are used within spec it should keep voltages from getting so low the batteries enter a state of deep discharge, as well as prevent overcharging due to imbalanced charging rates or other similar issues.
Used is the important word here. A battery must be used to maintain it’s health. A battery must also not be abused to maintain its health.
Now none of that touches on what you said, but was important background for this to make sense: The BMS will report to you whatever values it deems safe charging and Discharging limits based on factors like internal resistance and temperature. As a result 20-80% of an unmanaged battery is close to 0-100% of a managed one in new condition because the BMS will cut power before unsafe discharge limits are reached, and will stop charging to prevent overcharge once those limits are reached.
Just put in 2010 and most of everything it said is incredibly obvious. Plus some of the dates of updated sources seem really incorrect. For example, one of them is it is a myth that most oxygen comes from trees, but I very distinctly remember my math teacher of all people saying in 2006 or 2007 that when he was in school he corrected people that it’s mostly from plankton. And even if I’m misremembering this, he definitely said something about it being from plankton in those years, but it says the updated sources are from 2020.
It says that it is a myth that the big bang theory explains where the universe came from but in 2020 we found out it doesn’t explain what came before. Like… No? That’s always been what it is. Sure, it’s always been a Christian talking point to sort of say that, but then why say 2020?
But I guess it’s hard to really gauge what should and shouldn’t be included. I remember my 5th grade teacher telling me that Robert E. Lee was an honorable man. I don’t really remember exactly what all she said and if she got deeper into Lost Cause rhetoric than that, but she definitely said Lee was a “good man.”
deleted by creator
I think it’s a neat idea but probably needs more contributors and for people to be a bit more critical with things. For example, an obvious one, I don’t see it mention that Pluto is no longer classified as a planet. That would be a great thing to mention, especially if you talk about things we used to consider planets but don’t any longer. Ceres is another example of this. In 1801 it was discovered and considered a planet until sometime in the 1950s (it seems like it wasn’t an all-at-once shift) when it was considered an asteroid despite its planet like appearance. Now it is considered a dwarf planet like Pluto.