TLDW; No
Basically the video is testing phones with varying charging speeds and how much battery degrades after 500 charging cycles. Also, the affects on performance after battery degradation at 5:37
Timestamps of some tests:
- Test results for different charging speeds at 3:06
- Storing batteries at 1%, 50%, 100% at 3:43
- Battery performance at 4:42
After 6 mins he talks about why the tests took 2yrs and how they did it 3 times.
Its not the best test imo. He only did 500 charge cycles which is more like 1.5 years worth of charge cycles. But even having data for 2 years isnt very useful. If you replace your phone after 2 years then there is no need to care about battery life at all. This whole thing of preserving battery life is something for people that want to use a phone for 5+ years without needing a new battery.
In the first place, people have already done professional studies to analyze all kinds of lithium battery capacity degradation over many cycles and thats where the 30-80% number comes from. The whole introduction to his video is “there is a saying”, so all he had to do was actually look at the research where that “saying” came from. Then he could have still run his little experiment in an attempt to replicate parts of the study. Instead he basically told the viewers “if you throw away your phone after 2 years, then you dont need to care about charging limits” which is very useless information.
After 1500 cycles the difference between the 5-100% and 30-80% system would be so drastic that you wouldnt be able to really use the first one, while the other one would still work decently well.
When I was younger my mother would scold me for needing a replacement phone every 2 or 3 years because of how much they cost. Aside from gaming I was also working on schoolwork or reading stuff on my phone because I had no computer, and I often charged my phone to 100% while doing those things causing it to overheat and charged it by 20% so that wasn’t doing wonders for its lifespan. Man if only I knew. So it grinds my gears when I see someone dismiss battery lifespan concerns by assuming you’ll want to buy a new phone in 2 years. My mother’s phone has been with her for upwards of 5 years and she’s perfectly content with it. And because I invest my time in only one game (the same one for years) there is no need for performance upgrades. So what’s the point of buying a new phone every two years?
That’s a narrow point of view. It’s also reducing the ecological impact if a device’s battery isn’t trashed after two years, someone else would likely use it.
I think they more mean that the testing is flawed in that they didn’t test nearly enough cycles.
The type of person to get a new phone every 2 years probably doesn’t care much about the ewaste either, sadly.