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pichlo's Avatar
Posts: 6,447 | Thanked: 20,981 times | Joined on Sep 2012 @ UK
#41
Originally Posted by ric9K View Post
EDIT: oops, instruction in post 33, just above.
Wow, I even thanked that post. I have absolutely no recollection of that

It's irrelevant anyway. My N900 has been lying dormant for over two years
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#42
Most devices have 0.2F 3V capacitor instead of battery. It's funny issue, because faulty cap significantly reduces time on battery, I had this issue in N95-2 and my PSP. After replacing cap both problems - short battery life and clearing RTC after battery removing has been fixed.

Capacitor looks like this:

Last edited by Trzyzet; 2020-01-28 at 08:52.
 

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#43
Originally Posted by Trzyzet View Post
Capacitor looks like this: https://in.element14.com/productimag...B/42264039.jpg
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You don't have permission to access "http://in.element14.com/productimages/standard/en_GB/42264039.jpg" on this server.

Reference #18.ad921602.1580200366.4d576521



However, capacitors look like this: https://duckduckgo.com/?q=capacitor&...ages&ia=images
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#44
Originally Posted by pichlo View Post
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Reuploded the image. This cap is very special
 

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#45
I have several still in the tape from Joerg but it has been several moves so I have to scour the interior of the Tardis and find the time.
 

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#46
Originally Posted by Trzyzet View Post
Most devices have 0.2F 3V capacitor instead of battery. It's funny issue, because faulty cap significantly reduces time on battery, I had this issue in N95-2 and my PSP. After replacing cap both problems - short battery life and clearing RTC after battery removing has been fixed.
How much does it reduce battery life? I'm trying to assess if I should bother replacing that.
With a battery that is not new, my N900 can go ~ 1 day doing maintenance (ssh, un/installing stuff etc.), more just using it.
 
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#47
That would be a really good to know. I could also bother to replace it if it indeed affects significantly on battery life.
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#48
Originally Posted by Trzyzet View Post
Most devices have 0.2F 3V capacitor instead of battery. It's funny issue, because faulty cap significantly reduces time on battery, I had this issue in N95-2 and my PSP. After replacing cap both problems - short battery life and clearing RTC after battery removing has been fixed.

Capacitor looks like this: https://i.postimg.cc/JzwYcZDy/42264039.jpg
If a defective cap drains the battery, does a li-ion battery also do?
Because Joerg_RW says the original is a li-ion battery not a cap. (post #1)

Also, he says we could replace the bupbat with a 3.2V cap, not a 3V.
Does this 0.2V makes a difference?

In the mean time, or for those who don't want to replace it, we could just remove the Backup battery. Solving, at least, the battery drain problem.
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#49
Originally Posted by ric9K View Post
Does this 0.2V makes a difference?
In theory, maybe. In practice, no.
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#50
Originally Posted by ric9K View Post
If a defective cap drains the battery, does a li-ion battery also do?
Because Joerg_RW says the original is a li-ion battery not a cap. (post #1)
That's not a battery. For very long time I also thought this component is a battery but no - This is a capacitor. It should have even its parameters on the side
Originally Posted by ric9K View Post
Also, he says we could replace the bupbat with a 3.2V cap, not a 3V.
Does this 0.2V makes a difference?
Does not matter in this case.
Originally Posted by ric9K View Post
In the mean time, or for those who don't want to replace it, we could just remove the Backup battery. Solving, at least, the battery drain problem.
Exactly, if you can't find or solder a new one, you can just remove it to prevent main battery from draining.
 

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