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| Half charging lithium ion batteries for longer life expectancy |
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| Foxxz:
I have a pixel 6 phone that uses the alarm clock to guage how fast it should charge. If you have an alarm for no later than 10am and you plug it in in the evening it will charge and stop at 80%. Then about 2 hours before the alarm it will slowly bring the battery up to 100% |
| Doctorandus_P:
I do not use my phone much and the battery lasts somewhere between 12 to 16 days. Sometimes I forget to charge it, then it turns itself off and it can sit there for a month or so. I'm guessing it's about 7 years old now and it still works as intended. Battery capacity is better then when new (apparently it has to go through 5 to 10 cycles before it reaches maximum capacity) I would have liked a bigger battery. Say a phone that's 5mm thicker and a battery that lasts a month or 2, or at least 4 days when GPS (& OsmAnd) is on, but nobody makes such phones so I have to drag power banks around when I go hiking. Those phones are all the same thin flimsy things, except maybe for some extremely expensive "ruggedized" models, which also have a short battery life. I also do not understand why people spend EUR1000 on a phone. My EUR 160 Phone works just fine. (It's got a big Mc'Donalds "M" on it's case. Is that a brandname?) I also read (a long time ago) you can "optimize" battery capacity for charge cycles by increasing the charge voltage. 4.2V gives more capacity for reduced charge cycles, and phone companies like both, while cutoff at 4.1V gives a bit (10% or so?) lower capacity, but many more charge cycles. But there are apparently a lot of different Li-Ion chemistries and this may not be true for all those variants. But for me, the battery is still good after all those years so I can't complain. I also do not understand the whining about the non-replacable batteries. If it needs replacement I'll just mill out the back of the phone and put in a bunch of 18650's and cover it with hot snot to make it waterproof again. |
| ebastler:
--- Quote from: Doctorandus_P on May 30, 2022, 10:34:20 am ---My EUR 160 Phone works just fine. (It's got a big Mc'Donalds "M" on it's case. Is that a brandname?) --- End quote --- Motorola? You might have come across them, they have dabbled in electronics. ::) |
| NiHaoMike:
--- Quote from: Doctorandus_P on May 30, 2022, 10:34:20 am ---I would have liked a bigger battery. Say a phone that's 5mm thicker and a battery that lasts a month or 2, or at least 4 days when GPS (& OsmAnd) is on, but nobody makes such phones so I have to drag power banks around when I go hiking. Those phones are all the same thin flimsy things, except maybe for some extremely expensive "ruggedized" models, which also have a short battery life. --- End quote --- Is 13.2Ah big enough? --- Quote ---I also read (a long time ago) you can "optimize" battery capacity for charge cycles by increasing the charge voltage. 4.2V gives more capacity for reduced charge cycles, and phone companies like both, while cutoff at 4.1V gives a bit (10% or so?) lower capacity, but many more charge cycles. But there are apparently a lot of different Li-Ion chemistries and this may not be true for all those variants. But for me, the battery is still good after all those years so I can't complain. --- End quote --- There's an app for that, if your device supports it: https://f-droid.org/en/packages/mattecarra.accapp/ |
| Miyuki:
Temperature plays a huge role here As the electrolyte is highly volatile and with limited stability at elevated temperatures You can clearly see it on some EVs without proper cell temperature management, they have only limited life It is a really narrow range when you can safely charge it without causing degradation You want to keep them like 10-30*C Phones and laptops can get really hot Even storage at elevated temperatures shortens life significantly |
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