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This post doesn't give any actual argument why you should charge your device only to 80%. If you use your phone for, say, four years, and charge it to 100% regu
by cubefox 3y ago
This post doesn't give any actual argument why you should charge your device only to 80%. If you use your phone for, say, four years, and charge it to 100% regularly, how much will the battery life deteriorate during those four years? I assume if the fully-charged capacity after three years is still at least 80% of the original, then regularly charging it fully was absolutely worth it. The point is that deterioration in battery capacity has to be compared to the loss of usable capacity if you only charge it to 80% voluntarily.
By the way, they also warn from fully discharging the battery, and recommend an charge range from 30% to 80%. This would mean you limit yourself to only 50% of the capacity. It is questionable whether gains in battery lifetime can outweigh this loss in realistic scenarios.
The main lesson seems to be that you shouldn't fully discharge your battery when you can avoid it easily, and not fully charge it if you know in advance that you won't need the full charge.
- nrvn 3y agoBought my previous iphone in early 2018. Changed the battery this spring because its health reportedly fell below 80% of its maximum capacity. I could not care less to be honest. Always charged to 100%. Dropped the phone multiple times throughout its lifetime. Fully discharged at random. Exposed to 50°C and direct sunlight as well as well below zero. 5 years is a good job done for a non-replaceable battery. And the cost of replacement was like 50usd or something in apple store. The question is: why should I start bothering?..
- deleted 3y ago[deleted]
- lutorm 3y agoIf you were talking about the battery in your EV, the cost of replacement would be a bit higher. There are more things with batteries than iphones.
- dncornholio 3y ago> This post doesn't give any actual argument why you should charge your device only to 80%. It does, it tells you the battery will degrade 5 times less compared to charging it to 100%. If that is worth it is up to you to decide. I charge my phone daily, it's usually around 40% at the end of day so charging it to 80% should only benefit me.
- cubefox 3y ago> It does, it tells you the battery will degrade 5 times less compared to charging it to 100%. The original question was whether the slower degradation of the battery is worth the immediate loss of 20% battery capacity, not whether the battery degrades slower.
- J_Shelby_J 3y agoIt's highly dependent on the actual chemistry of the battery used. If you can find the spec sheet from the battery manufacturer, it should tell how discharge/charge voltages affect lifespan. Broadly, for lithium you can check out these charts: https://www.bing.com/images/search?q=dod+cycle+life+lithium+battery https://www.bing.com/images/search?q=dod+cycle+life+lithium+...