FS#12569 - iPod Classic - battery capacity update

Attached to Project: Rockbox
Opened by Albert Barca (axismundi) - Sunday, 29 January 2012, 15:39 GMT
Last edited by Nils Wallménius (nls) - Monday, 13 February 2012, 17:51 GMT
Task Type Patches
Category Battery/Charging
Status Closed
Assigned To No-one
Operating System Another
Severity Low
Priority Normal
Reported Version Daily build (which?)
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No


This extends the battery capacity range for iPod Classic and sets a new default value (550mAh). FYI, the thick 2007 160gb model has a 850 mAh battery.

Note that this will not have any effect on the remaining battery % as indicated by Rockbox. It could be useful for determining the actual remaining running time, but I'm not sure if this is implemented in Classic.
This task depends upon

Closed by  Nils Wallménius (nls)
Monday, 13 February 2012, 17:51 GMT
Reason for closing:  Accepted
Additional comments about closing:  comitted, thanks!
Comment by Nils Wallménius (nls) - Thursday, 09 February 2012, 22:42 GMT
With some light googling i found some references to the smaller battery being 580mAh, where did you find the 550 number?
Comment by Albert Barca (axismundi) - Friday, 10 February 2012, 00:59 GMT
I opened several Classics (80/120GB) and in all cases the battery was manufactured by Sanyo (model EC008-X), with no capacity marking. Apple does not disclose the capacity of the batteries either (no surprises here). I was not able to find a reliable source of information the web, I would be interested to know if someone else has first-hand data on this.

I guess that what you found searching the web is the capacity for the replacement batteries, which is indeed advertised at 580mAh. These are not original batteries and are sourced from obscure places in Far East, a region quite famous for being aggressive and freehanded when it comes to declaring products specifications. I would take the claimed capacity with a grain of salt.

Another thing to keep in mind is that the originals are Li-Ion whereas the 580mAh replacements are Li-Pol. All the Li-Ion replacement batteries I could find for sale (not that many compared to the Li-Pol version indeed) were rated at 550mAh or below.

On these notes, the 550mAh capacity seems more realistic to me hence the default setting.
Comment by Nils Wallménius (nls) - Sunday, 12 February 2012, 09:29 GMT
Perhaps i was confused as the 580mAh batteries were advertised as being the same capacity as the original, very well, doesn't matter much anyway. Do you have an email address so i can push this?
Comment by Albert Barca (axismundi) - Sunday, 12 February 2012, 23:54 GMT
Indeed, the 30mAh difference is not significant.

You can see my email address if you click on my name/username.