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  #1  
Old 05-02-2011, 02:43 PM
junglemike junglemike is offline
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Default My thoughts on I9 and battery upgrade

Hello folks.
Just wanted to share with you my thoughts on I9. Hopefully some cowon employees also read this forum :-)

I've been using Iriver Ifp series for years, and was very satisfied. I did *almost* everything i ever wanted, except for bookmarks, faster ff/rew speeds, and little lacking sound control.

This was until I discovered Iaudio G3!!! Now this is really a perfect device for me! It does really everything i need. But unfortunately half a year ago my G3 died abruptly!

I've been searching for many months on ebay and local 2nd hand sites for any G2 or G3, and NOTHING!

So Eventially I gave up and decided to buy least bad thing - I9.
It has some advantages, but much more disadvantages than old G3:

DISADVANTAGES:

1) NO tactile buttons! I hate those touch screens and panels. I'm using the player while running and cycling , and I need to navigate quickly with one hand w/o looking. Two tactile buttons somewhat help, but it is far from G2/G3, Iriver Ifp series

2) No more mp3 encoding capability. mp3 is much more versatile and there are more tools for it than ugly wma! I could choose 44/22/11khz and any possible bitrates on G3, while on I9 choice is extremely limited.

3) Really bad voice recording quality!!!! - There's extremely high noise. recording are useless in a large class while sitting in the middle. Even 10 year old Iriver 128mb can record with much higher quality . Shame on you , cowon

4) No station frequency setup for fm record alarms

5) Really small battery life compared to AA-based players like G3 and Iriver Ifp. The ratings that they give you are (not high to begin with) - for ideal conditions, - which means no lcd use, low volume, mp3 cbr, etc,etc.
I only use Ogg, and i use controls a lot. And current consumption is much higher while recording radio - so much so , that I unable to record all programs that I want in a single day. Fortunately - I sold this problem by adding 2nd battery, see at the end of my post.

ADVANTAGES:

1) Considerably better FM reception!! which is surprising. In fact it is much better than any player i know (including new ones). In my work i can get some reception on -3rd floor, while other pmp's have only noise. NIce!

2) Well, can't find any more advantages, apart from larger memory, which is not so important for me. I would immediately switch it for 2gb G3 If I could find one


I've so fed up lately with dismal battery performance, that I decided to deal with the issue myself.

Here's I9 opened: BTW, you can see now WHY the buttons are in uncomfortable position. There's simply battery and lcd in the upper part, no room for buttons/switches. Battery is 510 mah, but i think it's overrated. Too small for such mah.
http://dl.dropbox.com/u/14366716/i9_1.jpg
Here's the battery i'm adding. 800mah is actual capacity I tested
http://dl.dropbox.com/u/14366716/i9_2.jpg
I cut out portion of the back to the size of new battery. BTW the back plastic is very thick!
http://dl.dropbox.com/u/14366716/i9_3.jpg
I solder the new battery in parallel with the original (equalizing the voltages beforehand-> I charged them both full to 4.2v. Put some epoxy to avoid accidental short circuit of battery contacts
http://dl.dropbox.com/u/14366716/i9_4.jpg
Close everything:
http://dl.dropbox.com/u/14366716/i9_5.jpg
Here's the profile. I9 is now 11.2mm thick instead of 9.3mm thick original - really insignificant thickness increase for 156% capacity increase.
http://dl.dropbox.com/u/14366716/i9_6.jpg

As for the run times - I don't have time to test it, and it's unnecessary, but it still stays full for whole day of working, so i guess it's OK.
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  #2  
Old 05-02-2011, 02:49 PM
Marvin the Martian's Avatar
Marvin the Martian Marvin the Martian is offline
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Glad it works for you.....but it sure isn't pretty.
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Old 05-02-2011, 02:54 PM
junglemike junglemike is offline
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If you saw what I did with my phone and my palm - you would definitely say that I9 is the prettiest of them
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Old 05-02-2011, 02:59 PM
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Marvin the Martian Marvin the Martian is offline
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I've never tried the radio or voice recording on my i9....but it certainly doesn't have the battery life of a D2 or J3. It's been good enough for me though, since I have more players than I really need.
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Old 05-02-2011, 03:18 PM
junglemike junglemike is offline
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Marvin, Just to give you some perspective, i've just recorded tiny 3 sec audio from both i9:
http://dl.dropbox.com/u/14366716/VOR...2023-09-42.wma
and Iriver IFP799 (256mb):
http://dl.dropbox.com/u/14366716/VOICE004.MP3

Both players were some 3 meters from me and you can hear high pitch noise from I9 despite using much higher bitrate. Now This iriver is more than 6 years old. Isn't it a shame. And my dead G3 could record even better.!
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