a***y
发帖数: 19743 | |
S*A
发帖数: 7142 | 2 Let the lithium battery drain less than 20% (less than 3.7 V per
cell) will hurt your total battery capacity. I learn that from
flying RC heli.
【在 a***y 的大作中提到】
: 在1%的地方呆了大约半小时才关机。
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a***y
发帖数: 19743 | 3 then why would apple recommend it?
And it is not like it is completely drained. The OS/firmware decide when to
shut iPhone down.
【在 S*A 的大作中提到】
: Let the lithium battery drain less than 20% (less than 3.7 V per
: cell) will hurt your total battery capacity. I learn that from
: flying RC heli.
|
i***r
发帖数: 1024 | 4 re，
哈勃上的锂电池寿命能达到10w次充放，就是避免冲的太满，放的太净。
【在 S*A 的大作中提到】
: Let the lithium battery drain less than 20% (less than 3.7 V per
: cell) will hurt your total battery capacity. I learn that from
: flying RC heli.
|
S*A
发帖数: 7142 | 5 There is a hint of that 20% thing in iphone already. If it drop below
20%, the battery is red. That means you are need to charge it ASAP.
Where do you read apple recommend completely drain the battery?
I google "iphone calibrate battery", I did not see much recommend
from apple. People talking about calibrate battery most likely
don't know what they are talking about.
Here is the iphone battery page I found in apple. It match my
understanding of the lithium battery petty well.
e.g. Always 100% full change without discharge is bad for
the battery.
http://www.apple.com/batteries/iphone.html
to
【在 a***y 的大作中提到】
: then why would apple recommend it?
: And it is not like it is completely drained. The OS/firmware decide when to
: shut iPhone down.
|
a****a
发帖数: 5763 | 6 hmmm, seems in the link u posted, at the last para says:
Use iPhone Regularly
For proper maintenance of a lithium-based battery, it’s important to keep
the electrons in it moving occasionally. Be sure to go through at least one
charge cycle per month (charging the battery to 100% and then completely
running it down).
【在 S*A 的大作中提到】
: There is a hint of that 20% thing in iphone already. If it drop below
: 20%, the battery is red. That means you are need to charge it ASAP.
: Where do you read apple recommend completely drain the battery?
: I google "iphone calibrate battery", I did not see much recommend
: from apple. People talking about calibrate battery most likely
: don't know what they are talking about.
: Here is the iphone battery page I found in apple. It match my
: understanding of the lithium battery petty well.
: e.g. Always 100% full change without discharge is bad for
: the battery.
|
S*A
发帖数: 7142 | 7 100% charge is not a problem as long as it does not hold
there for very long time. Usually I charge my RC battery the
day before the flight. My RC battery hold up very well even
the abuse I have it them (20C discharge).
But very time battery drop below 20% will hurt the total
capacity, a little at a time.
【在 i***r 的大作中提到】
: re，
: 哈勃上的锂电池寿命能达到10w次充放，就是避免冲的太满，放的太净。
|
d******e
发帖数: 7844 | 8 你以为锂电池多的那个芯片是SB？
【在 S*A 的大作中提到】
: There is a hint of that 20% thing in iphone already. If it drop below
: 20%, the battery is red. That means you are need to charge it ASAP.
: Where do you read apple recommend completely drain the battery?
: I google "iphone calibrate battery", I did not see much recommend
: from apple. People talking about calibrate battery most likely
: don't know what they are talking about.
: Here is the iphone battery page I found in apple. It match my
: understanding of the lithium battery petty well.
: e.g. Always 100% full change without discharge is bad for
: the battery.
|
d******e
发帖数: 7844 | 9 只能说明你在用劣质锂电池
【在 S*A 的大作中提到】
: 100% charge is not a problem as long as it does not hold
: there for very long time. Usually I charge my RC battery the
: day before the flight. My RC battery hold up very well even
: the abuse I have it them (20C discharge).
: But very time battery drop below 20% will hurt the total
: capacity, a little at a time.
|
b****n
发帖数: 993 | 10 我的猜想是这样的。确实锂离子电池过度放电会导致寿命减短，所以一般都推荐能充就
充，不要过度放电，反正没有记忆效应。但是另一方面，手机上电池显示是偶尔需要校
正的，不然的话没法正确显示电量。我的笔记本电脑好像就有这个问题，明明电池有电
，但是显示为零。所以苹果的官网推荐一个月来一次满充满放，估计是通过这样来校正
电池管理程序。一个月一次也不至于导致寿命的大幅度缩减。
个人猜测，还请懂行的仔细说说。
【在 S*A 的大作中提到】
: Let the lithium battery drain less than 20% (less than 3.7 V per
: cell) will hurt your total battery capacity. I learn that from
: flying RC heli.
|
S*A
发帖数: 7142 | 11 That is the same thing as not keep 100% all the time.
What we call cycle the battery. That is for iphone/laptop that
keep in the charging station all the time. If you take
out to use it, I wouldn't worry about it.
But even cycle the battery I would not run down to 3.7 V.
3.75v is the sweat spot. What voltage corresponding to 20%
on iphone. But I will not go below red for my iphone.
one
【在 a****a 的大作中提到】
: hmmm, seems in the link u posted, at the last para says:
: Use iPhone Regularly
: For proper maintenance of a lithium-based battery, it’s important to keep
: the electrons in it moving occasionally. Be sure to go through at least one
: charge cycle per month (charging the battery to 100% and then completely
: running it down).
|
S*A
发帖数: 7142 | 12 Every lithium battery has the same problem, expensive one
and cheap one both hurt capacity when over drain below 3.7v.
If you insist, drain below 20% as you like.
It is your iphone not mine. I do really give a damn.
【在 d******e 的大作中提到】
: 只能说明你在用劣质锂电池
|
S*A
发帖数: 7142 | 13
一直充满的记忆效应是有的，但是没有过度放电那么严重。
而且锂电池的工作电压都是非常准的，这个不大会漂移。
需要校准的是电池的容量，这个是随着使用逐渐减少的。
如果电脑要估计还能用多少分钟，那需要知道总容量。
反正电池充电放电都是根据电压来的。
iphone 4s 漏电这么快我不觉的需要一个月放一次。每天都基本上
在 cycle.
【在 b****n 的大作中提到】
: 我的猜想是这样的。确实锂离子电池过度放电会导致寿命减短，所以一般都推荐能充就
: 充，不要过度放电，反正没有记忆效应。但是另一方面，手机上电池显示是偶尔需要校
: 正的，不然的话没法正确显示电量。我的笔记本电脑好像就有这个问题，明明电池有电
: ，但是显示为零。所以苹果的官网推荐一个月来一次满充满放，估计是通过这样来校正
: 电池管理程序。一个月一次也不至于导致寿命的大幅度缩减。
: 个人猜测，还请懂行的仔细说说。
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