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Rockbox Ports are now being developed for various digital audio players!

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Author Topic: Ipod 5.5gen/settings/Battery: Which mAh value?  (Read 4845 times)

Offline surfer

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Ipod 5.5gen/settings/Battery: Which mAh value?
« on: April 11, 2008, 04:00:06 AM »
There is a difference in battery vapacity between the ipods of the 5gen and 5.5gen.

Which mAh value should i set in rockbox/general settings for my 5.5gen battery?
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Offline AlexP

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Re: Ipod 5.5gen/settings/Battery: Which mAh value?
« Reply #1 on: April 11, 2008, 08:51:34 AM »
To be honest, it doesn't really matter.  The battery capacity is only used on these players to estimate the remaining runtime (not the battery %), which isn't very accurate on them anyway.
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Offline soap

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Re: Ipod 5.5gen/settings/Battery: Which mAh value?
« Reply #2 on: April 12, 2008, 08:14:03 AM »
Quote from: BigBambi on April 11, 2008, 08:51:34 AM
The battery capacity is only used on these players to estimate the remaining runtime (not the battery %), which isn't very accurate on them anyway.
It is accurate enough.
Quote
There is a difference in battery vapacity between the ipods of the 5gen and 5.5gen.
There is not.
There is a difference in battery capacity between the 30GB models and the 60/80GB models.

Quote
Which mAh value should i set in rockbox/general settings for my 5.5gen battery?
If you downloaded the right version for your player it should default to the correct setting.  If you have changed the default setting google is your friend.
IIRC 30GB = 400mah and 60/80GB = 640mah.

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Offline AlexP

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Re: Ipod 5.5gen/settings/Battery: Which mAh value?
« Reply #3 on: April 12, 2008, 09:47:48 AM »
Quote from: soap on April 12, 2008, 08:14:03 AM
Quote from: BigBambi on April 11, 2008, 08:51:34 AM
The battery capacity is only used on these players to estimate the remaining runtime (not the battery %), which isn't very accurate on them anyway.
It is accurate enough.

This depends on your battery and what you consider accurate enough.  Anyway, I was just explaining that the battery capacity only matters for runtime estimation, and not for anything else.
« Last Edit: April 12, 2008, 10:36:44 AM by BigBambi »
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Offline surfer

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Re: Ipod 5.5gen/settings/Battery: Which mAh value?
« Reply #4 on: April 12, 2008, 10:44:33 AM »
thanks for you answers!

Ok, i probably misunderstood some hints on the internet about the impeoved battery life in the newer "5.5 gen" Ipod comparing to the "5 gen". I found an article now explaining that a little more in detail:

Quote
According to my source for some of this information, there are two reasons for the improved battery life in the 5.5G iPods: better power management software in the firmware, and lower power consumption by the new displays. I.e. even though the new screens are brighter, they are more efficient.

http://daringfireball.net/2006/09/fifth_generation_ipod_features

But my question here was in fact about this "estimation" of the remaining runtime, and even if it surely cannot be exact it still remains a good estimate about how much time you still have before having to charge again.
And it does make a difference if you set this value with, let's say, 300 or 600mAh.
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Offline soap

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Re: Ipod 5.5gen/settings/Battery: Which mAh value?
« Reply #5 on: April 12, 2008, 01:20:24 PM »
Quote from: surfer on April 12, 2008, 10:44:33 AM
And it does make a difference if you set this value with, let's say, 300 or 600mAh.

Quote from: BigBambi on April 11, 2008, 08:51:34 AM
The battery capacity is only used on these players to estimate the remaining runtime

Apple only claimed longer movie playback, never claimed longer music playback with the 5.5th gen over the 5th gen.  That right there pretty much answers the question if there is a battery difference.  Pretty strongly points the finger at display, back light, or possibly Broadcomm firmware.
« Last Edit: April 12, 2008, 01:24:42 PM by soap »
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Offline dannyboi

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Re: Ipod 5.5gen/settings/Battery: Which mAh value?
« Reply #6 on: September 08, 2008, 12:21:51 AM »
In your experience, what is the optimal mah setting for the Ipod 5.5G 80GB?

Having it as 650mah, I've found that the battery indicator drops by 10% every few minutes of listening, which seems somewhat weird.

I set it at 1000mah, but I don't really know what this means in my situation.
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Offline GodEater

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Re: Ipod 5.5gen/settings/Battery: Which mAh value?
« Reply #7 on: September 08, 2008, 06:26:09 AM »
Please re-read BigBambi's post above.
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