+1 for battery university, they're an excellent source. Does anyone have any other suggestions for similarly technically deep (while approachable) articles on any other facet consumer electronics?
My understanding from this article is that:
1. Charge the battery to as low a max percentage as possible (till about 65%)
2. Keep it as cool as possible (up to zero degrees C at least)
3. Use it as little as possible before recharging it (minimize charge-discharge bandwidth)
Aka, over-rate and over size the battery if you're building the device, and minimize extremes on any side of soc (state of charge).
Do EV manufacturers use any other tricks not covered by this?
(Of course, use the device as needed, these are just guidelines for the best perfomance.)
After the first battery of my Samsung S4 expanded at the end of its life in less than 2 years, I found a utility that didn't work perfectly but could limit charge anywhere between 30 to 100% most of the time, and it prolonged the lifetime of the couple of later batteries during the 10+ years I used the phone with a limit around 66%.
I was glad to see my new Samsung XCover 7 has a built-in option to limit charge to 80%, although a flaky usb cable could sometimes overcharge to 100%. And also has a removable battery.
I definitely would do that if I could. I would absolutely love to tell it to only charge to 66% (or whatever, even 50% would work). I rarely use the phone for multiple hours at a time without access to power, and when I do, I usually know beforehand (like during a trip or something) so I could tell it to charge all the way. My battery rarely goes below 80%, even now that the phone is 3.5 years old.
I understand newer iphones now have the option to only charge up to a certain percentage. Mine doesn't have that, it only has the "smart charging", which tries not to charge it too quickly and only is full by the time it expects you'll use it (usually in the morning). It's very hit and miss for my use patterns, so it ends up at 100% most of the time...
But yeah, at some point we should also consider the tradeoff between convenience and battery life. Batteries can be replaced, having to charge twice a day is a PITA for me.
My charging solution is that I've purchased three (cheap and therefore slow) wireless charging docks that sit my phone slightly leaning backwards, therefore nicely viewable if necessary.
One sits on my desk at work, one sits on my desk at home and the third sits on my bedside table (it acts like a clock radio / alarm clock). I just place it on the relevant charger while working / sleeping and it's always got enough charge when I need it.
(I also use the surprisingly fairly recent addition of charging protection to limit it to 80% charge)
I'm aware this won't work for all use cases, but it's great for mine.
+1 for battery university, they're an excellent source. Does anyone have any other suggestions for similarly technically deep (while approachable) articles on any other facet consumer electronics?
My understanding from this article is that:
1. Charge the battery to as low a max percentage as possible (till about 65%) 2. Keep it as cool as possible (up to zero degrees C at least) 3. Use it as little as possible before recharging it (minimize charge-discharge bandwidth)
Aka, over-rate and over size the battery if you're building the device, and minimize extremes on any side of soc (state of charge).
Do EV manufacturers use any other tricks not covered by this?
(Of course, use the device as needed, these are just guidelines for the best perfomance.)
After the first battery of my Samsung S4 expanded at the end of its life in less than 2 years, I found a utility that didn't work perfectly but could limit charge anywhere between 30 to 100% most of the time, and it prolonged the lifetime of the couple of later batteries during the 10+ years I used the phone with a limit around 66%.
I was glad to see my new Samsung XCover 7 has a built-in option to limit charge to 80%, although a flaky usb cable could sometimes overcharge to 100%. And also has a removable battery.
You only charged your phone to 66% for ten years?
I definitely would do that if I could. I would absolutely love to tell it to only charge to 66% (or whatever, even 50% would work). I rarely use the phone for multiple hours at a time without access to power, and when I do, I usually know beforehand (like during a trip or something) so I could tell it to charge all the way. My battery rarely goes below 80%, even now that the phone is 3.5 years old.
I understand newer iphones now have the option to only charge up to a certain percentage. Mine doesn't have that, it only has the "smart charging", which tries not to charge it too quickly and only is full by the time it expects you'll use it (usually in the morning). It's very hit and miss for my use patterns, so it ends up at 100% most of the time...
Veeeeery slow charger :)
But yeah, at some point we should also consider the tradeoff between convenience and battery life. Batteries can be replaced, having to charge twice a day is a PITA for me.
My charging solution is that I've purchased three (cheap and therefore slow) wireless charging docks that sit my phone slightly leaning backwards, therefore nicely viewable if necessary.
One sits on my desk at work, one sits on my desk at home and the third sits on my bedside table (it acts like a clock radio / alarm clock). I just place it on the relevant charger while working / sleeping and it's always got enough charge when I need it.
(I also use the surprisingly fairly recent addition of charging protection to limit it to 80% charge)
I'm aware this won't work for all use cases, but it's great for mine.