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>> If you want to keep your phone’s battery health in the best possible condition it possibly could be in, you must use the Google charger and cable and keep th

>> If you want to keep your phone’s battery health in the best possible condition it possibly could be in, you must use the Google charger and cable and keep them all plugged in around the clock. > Correct me if I'm wrong but the best state of charge for long term storage (not use) is around 60%. Your reaction is a non-sequitur to the author's point; they were being sassy by saying if you want optimal battery life, plug in and let the device manage voltage/battery health forever. > this indicates that 80% is better than 100% Better for what? 50% is better for long-term disconnected storage -- actually, voltage is better than % and for storage you're aiming for 3.7v/cell (which is roughly 40-50%) which is where the discharge properties slow almost to a halt. 80% is the kind of standard "I'm not discharging this charge immediately"-recommended state (see: EV charging recommendations). What the author mentioned in passing and didn't really explain is overprovisioning, which is where the device reports e.g. 100% charge, when the cells are really e.g. 92% charged, which some devices do to maintain battery health. So depending on your device and its configuration, trying to keep charge capped at 80% might in reality be keeping it much lower than you intended. Anyway, the point of the article is for batteries with good battery management systems -- like modern phones -- it is better to not try and micromanage SoC and let the system do its thing. Those of us that have lots of naked cells should be doing that micro for those cells, but when built into a device with proper management there's no need and it could hurt more than it helps.

yjftsjthsd-h 3y ago
> Your reaction is a non-sequitur to the author's point; they were being sassy by saying if you want optimal battery life, plug in and let the device manage voltage/battery health forever. I don't think that's a non sequitur; the author is wrong. Leaving the device plugged in won't give you optimal battery life, it will at best simply avoid it mattering. The firmware can reserve room and say it's at 100% when it's physically 90%, but that's still going to degrade the cells faster than 80% or 60%.
- Domenic_S 3y ago
  The fact is we (you and I) don't know what the Android phone's behavior is when plugged in 24/7 (note the author is a community mod for an Android-compatible OS). The UI can/does lie, and it's probably different from model to model, so at best we can say we're not sure if he's right or not. Technically using DC power instead of battery is best for battery health (dis/charge cycles are worse for battery health) but like I said before, it's just a snarky suggestion on his part.
user_7832 3y ago
>> this indicates that 80% is better than 100% > Better for what? 50% is better for long-term disconnected storage -- actually, voltage is better than % and for storage you're aiming for 3.7v/cell (which is roughly 40-50%) which is where the discharge properties slow almost to a halt. 80% is the kind of standard "I'm not discharging this charge immediately"-recommended state (see: EV charging recommendations). I meant better for the battery health in general, if kept permanently plugged in at that level. I agree 50% is likely much better than 80%, which is still better than 100%. It's just that very few OSes/software/BIOSes allow you to set it at 50 or 60%, while a few (like Apple) do fallback to 80% which is at least better than 100%. Interestingly, I think my Framework BIOS allows me to set it at any value between 1 & 100%. I have set mine to a relatively "lower" 75%.
- Domenic_S 3y ago
  I charge my iPhone 13 pro (2021) with zero regard for battery health, and mostly via Qi, and iOS reports battery health at 89% which is much better than the expected -10%/year (I say expected because Apple will replace your battery if you lose 10% capacity within the first year). I charge my Tesla whenever, usually limiting to 90% but doing 100% maybe 10% of the time. 2021 model, Teslafi shows 8% capacity loss. Anecdotally I'm just not convinced that modern batteries with modern BMS need my micromanagement. Dealing with raw cells (18650s and the like) is a different story, but phones -- no way. But I'm not going to look down on someone if they feel passionate about it.

yjftsjthsd-h 3y ago

> Your reaction is a non-sequitur to the author's point; they were being sassy by saying if you want optimal battery life, plug in and let the device manage voltage/battery health forever. I don't think that's a non sequitur; the author is wrong. Leaving the device plugged in won't give you optimal battery life, it will at best simply avoid it mattering. The firmware can reserve room and say it's at 100% when it's physically 90%, but that's still going to degrade the cells faster than 80% or 60%.

Domenic_S 3y ago
The fact is we (you and I) don't know what the Android phone's behavior is when plugged in 24/7 (note the author is a community mod for an Android-compatible OS). The UI can/does lie, and it's probably different from model to model, so at best we can say we're not sure if he's right or not. Technically using DC power instead of battery is best for battery health (dis/charge cycles are worse for battery health) but like I said before, it's just a snarky suggestion on his part.

user_7832 3y ago

>> this indicates that 80% is better than 100% > Better for what? 50% is better for long-term disconnected storage -- actually, voltage is better than % and for storage you're aiming for 3.7v/cell (which is roughly 40-50%) which is where the discharge properties slow almost to a halt. 80% is the kind of standard "I'm not discharging this charge immediately"-recommended state (see: EV charging recommendations). I meant better for the battery health in general, if kept permanently plugged in at that level. I agree 50% is likely much better than 80%, which is still better than 100%. It's just that very few OSes/software/BIOSes allow you to set it at 50 or 60%, while a few (like Apple) do fallback to 80% which is at least better than 100%. Interestingly, I think my Framework BIOS allows me to set it at any value between 1 & 100%. I have set mine to a relatively "lower" 75%.

Domenic_S 3y ago
I charge my iPhone 13 pro (2021) with zero regard for battery health, and mostly via Qi, and iOS reports battery health at 89% which is much better than the expected -10%/year (I say expected because Apple will replace your battery if you lose 10% capacity within the first year). I charge my Tesla whenever, usually limiting to 90% but doing 100% maybe 10% of the time. 2021 model, Teslafi shows 8% capacity loss. Anecdotally I'm just not convinced that modern batteries with modern BMS need my micromanagement. Dealing with raw cells (18650s and the like) is a different story, but phones -- no way. But I'm not going to look down on someone if they feel passionate about it.