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Using Ni-MH instead of Li-ion in iAudio X5V

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DervishD:
Hi all :)

My iAudio's battery is dead, but that's not a great deal because I think I can manage to get an equivalent battery. The problem is that I'm not sure about the disk health, either, so before spending money in a replacement I'm thinking about other solutions.

I have some spare Ni-MH 1,2V 2700mAH batteries that would provide 4,8V and plenty of current, but I don't think I can connect them where the actual battery is ;). I don't know what kind of regulator (if any) is connected to the Li-Ion battery, and I doubt I could charge the Ni-MH...

The thing is that I don't want to connect this battery pack using the backpack, so I would have to solder it directly to where the subpack puts the 5V entry coming from the charger. And no, I don't plan to use the charger to charge the Ni-MH cells!

My question is the following: if I connect the new batteries to the "charger entry" the iAudio will be always in "charge mode". Not bad, except that I don't have any indication about how much battery I have left, and I hate when I run out of battery. Given that I cannot charge the Ni-MH except when they are empty, it would be great if I could at least use a new set of batteries (I have 8 spare Ni-MH batteries) if I plan to go out with my player for some hours. I mean, with an indicator I can make my own plan of recharge while at the same time being able to allow the batteries to empty properly. Otherwise I would have to carry two sets of batteries.

Is possible to have some kind of indicator soldering the new set in a different place of the player instead of the 5V entry? If the answer is yes: where? Is it safe to put 4.8V where the Li-Ion battery is currently soldered given that I won't try to recharge the new batteries using the player? I know I can put 4V, but 4.8V may be too much...

Thanks a lot in advance :)))

Raúl Núñez de Arenas Coronado

saratoga:
It would be easier to just buy a new lipoly battery.

gnu:
It *might* work if you replace the Li-ion battery with 3 Ni-MH batteries, thusly giving you ~3.6V.
But if you want to solder anyway, why don't you purchase a new lipoly battery, as saratoga suggested? They're not that expensive and will make your X5 run for a long time...

Llorean:
Please read the forum's posting guidelines, specifically about making use of the "modify" button if the thread has not received any replies since your last post to it.

DervishD:

--- Quote from: Llorean on March 19, 2008, 04:43:35 PM ---Please read the forum's posting guidelines, specifically about making use of the "modify" button if the thread has not received any replies since your last post to it.

--- End quote ---

Sorry, I don't know what you mean. I haven't used the "modify" button, I've only replied to the replies I've received...

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