iPod Touch Battery Thickness (need thin battery)

Does anyone know the thickness of the 4th gen ipod touch battery?  I'm looking for a thin lithium battery (less than 2mm thick) that has decent capacity (more than 300mAH).  If anyone knows the thickness of the ipod battery (or any other suitable battery) it would be greatly appreciated.

Topic by guyfrom7up 


Zune battery to charge ipod touch?

My plan is to build a minty boost using a zune battery instead. I'm pretty sure i know how to implement the zunes battery to power the LM 7805 5 volt regulator. I need help with being able to chare the zune's battrery... A 3.7 volt Li-Ion Polymer battery. I want to use usb for this. Only trouble im having is how do i get the batter to stop charging when it is fully charged? it has 3 pins; P+, P-, and HDQ. I take it the HDQ has something to do with my problem. also seeing how the minty boost is 3 volts at 500MA my 3.7 volt should work fine as long as i keep the current at 500MA right? Also, I have a Tri-coloed LED (RED, GRN, BLU) I'd like the Red to show up when the zune battery is running out of power and the blue for when its charging the ipod., and green to be on when the zune battery is charging... I know to charge the zune battery isnt going to be far off from how im charging ipod batter with the zune battery. I know this is probably alot to take in so thanks for any help.

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Can I charge my ipod touch 4g with 9000mah? Answered

I'm planning on making an ipod charger with 3 or 2 trustfire 18650s that are 3000 mah a piece and 3.7 volts each. Could i make this work with an adafruit battery charger?  http://www.adafruit.com/products/280#Description Thank you in advance.

Question by theboygenius   |  last reply


Battery run bluetooth class d amp - help me fix the noise problem.

Hello, I am designing a small bluetooth battery powered portable speaker enclosure/boombox. At the core of this design is a cctv li-ion battery that has 12v and 5v USB output ports. Its a great start to a boombox, or at least I thought it was. From that battery, I am powering two things. A parts express Stereo Bluetooth Module, (running on the 5v USB) and a Lepai 2020 tripath amp, running on the 12v Perfect you say. Thats what I said. Plug it all together.... huge huge huge garbage noise, with digital clicks and beeps. All three components work fine on their own. The amp plays cleanly with bluetooth modules that have internal lithium batteries, the bluetooth module sends a clean signal to amps not sharing a power source. I had a proficient audio repair man attempt to filter out the noise with resistors placed in numerous places, but it only slightly lessened the noise. Unfortunately I didn't document what he tried. I have attached a photo of the setup (without the speaker attached) I noted one thing... that if one was to connect the bluetooth using the rca input to the amp, if you only touched the internal rod to the inside of the female rca jack on the amp, keeping the outer shielding free from the amp, it would clearly make the noise, with no change in the noise when you pushed the plug all the way on, touching the outer shielding. That seems of interest. Yes? Let me know if I can clarify any more of this. Any help would be most appreciated! Thanks, Tor

Question by torclausen   |  last reply