Comment on BYD’s Second-Generation Blade Battery Makes Western EV Tech Look Ancient
Bell@lemmy.world 3 weeks ago
Charge time sounds great, but what about the number of charge cycles (I.e. longevity), the article did not mention that.
Comment on BYD’s Second-Generation Blade Battery Makes Western EV Tech Look Ancient
Bell@lemmy.world 3 weeks ago
Charge time sounds great, but what about the number of charge cycles (I.e. longevity), the article did not mention that.
mlg@lemmy.world 3 weeks ago
They don’t mention it, but I highly suspect its actually not significant.
I used to think fast charging did the same thing, but it turns out that even the heaviest wattage implementations have negligible effects on cycles and health.
As long as your driver is smart enough to control or manipulate the voltage at certain capacities (<15% and >85%), the higher power won’t affect the cell quality.
clone_ix@feddit.org 2 weeks ago
You are correct. This is for phones, where it is worse than for EVs, but:
www.youtube.com/watch?v=kLS5Cg_yNdM
87Six@lemmy.zip 2 weeks ago
I feel like this is the important detail here…
When buying a car, you can’t have a clue whether that is the case.
I used to believe fast charging is harmless in phones too. It isn’t. I charge my phone only to 80%, and not daily. I haven’t lost a single % of battery health in almost a year. Meanwhile my friends charge to 100% and very often, always on fast charging. I got a friend to install accubattery to check their health and it was at 93% after only about 1.5 years.
Tl;dr: I suspect the driver will be dogshit and cause batteries to get destroyed in anything but the flagship car models to increase battery service revenue BY A LOT…
46_and_2@lemmy.world 2 weeks ago
Do I understand correctly - you charge to 80%, have zero degradation, but also only use 80% of your battery at most, because of that.
Your fast-charging friend, meanwhile, has been using all 100% down to 93% battery for these 1.5 years. Maybe, in a bad scenario his battery will degrade to 80% in 1-2 years and he’ll start using only 80% of his like you?
Where’s the upside in this, unless you’re both planing to use dame phone in e.g. 5 years and you might get ahead in battery capacity finally?
87Six@lemmy.zip 2 weeks ago
There are many upsides.
One is my phone survives longer and whem I sell it second hand to a less fortunate person, they get a phone with a battery in perfect condition.
Another is that my phone holds more value.
Another is that I remove a worry from my head. I’m no longer questioning whether I am destroying my battery.
Though I don’t see the upside of charging to 100%. I literally dont need to. An 80% charge lasts me like 3 days so I usually charge every 2 days in case I need my phone.
Not EVERYTHING is about having something better than someone else, jesus, I’m so tired of this mentality of “I gotta have just a little more than that other guy”. Why should I try to get more if I literally don’t need it?
Why would I want my phone to charge in 5 minutes if I spend 6-8 hours sleeping myself???
Why would I want to charge to 100% if 80% lasts me 3 damn days? (And that’s if I use my phone a decent amount)
If you need 100% charge daily by all means charge to 100% at full fast charging speed but I literally don’t need it.
SaraTonin@lemmy.world 2 weeks ago
Every time I’ve seen someone test this hypothesis - as in doing a long-term experiment with the specific purpose of testing whether fast charging harms battery health - the result has come back that it doesn’t make much deference at all
It’s also worth pointing out that every battery is different and apps like Accubattery are imprecise. It’s entirely possible that your 100% and your friend’s 93% are actually exactly the same. It’s also possible that their battery would have displayed 93% when brand new
87Six@lemmy.zip 2 weeks ago
I crossreferenced my testing a lot though I cant 100% guarantee what I found is accurate.
Though I can say this: I don’t think built-in health monitors in phones are worth a damn. My gran’s phone was showing at 100% health when accubattery was at a whopping 73%. Testing the old and new battery, the new battery held up just about 30% more time than the old one on youtube playback.
I did other things that I wont get into
This is why I chose to trust accubattery and pretty much invalidate other testing in my head. I know it’s one single test and sample but this is my information and I trust it at lleast for now.
zqps@sh.itjust.works 2 weeks ago
93% after 1.5 years works just fine for most users who do not prioritize longevity or sustainability over convenience.
87Six@lemmy.zip 2 weeks ago
It’s not even about convenience. They just have fast charging on by default and they never bother to check if they need it and what are the ups and downs
MonkderVierte@lemmy.zip 2 weeks ago
Some phones get over 70° while fast charging, which is not helathy for the battery first.
87Six@lemmy.zip 2 weeks ago
Yea the temperature change is what kills afaik.
hanrahan@slrpnk.net 2 weeks ago
so after 1.5 yrs you’re at 80% and they’re at 93%?