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I collect iPods and have found a couple Nano that have started the telltale signs of a swollen battery. I’ve tried following the steps in the guide to open my device, but they don’t work when the battery is even slightly swollen. I’m incredibly curious if anyone has even been successful with changing the swollen battery on this model. I’d appreciate ANY help that doesn’t include anything along the lines of “just throw it away”.
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The battery usually puff up because of internal gas discharge. I have no idea what gas they may be, but it’s just gas. To reduce the volume of gas, you can either use high pressure or low temperature; the former is harder, but the latter may be worth a try: I just opened a lightly puffed iPod nano 4th gen (the “wet mark” showing the screen contacting the glass panel was only about the size of a grain of rice) by freezing it in a conventional fridge (no idea the actual temp, maybe 0 F or -18 C). I used a sealed container with some desiccant for it; there should be very little chance of things going wrong.
Notice that if you work in a humid area, condensation may form on the iPod inside and out: make sure they are off and discharge the battery if needed. Once you get the screen off, everything else should be very straightforward. Make sure to let the iPod warm up to room temperature before pulling out the solder iron or trying to start it.
Hope this helps.
(P.S. I did damage the screen mounting hardware a bit before trying the cold method because I was too optimistic about the battery expansion… the display retainer pulled off and the screen metal bracket is bent. The battery also didn’t give up without a minor hassle, so be more careful than I was.
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I have successfully relieved the gas pressure with an insulin syringe. Start by taking off the plastic cover and the hold switch lever from the top of the iPod. Do not try to take the whole switch itself out yet. Insert the needle between the hold switch and the back of the case on the right side to avoid the ribbon cable until you puncture the battery cover. The gas will release and the mark on the screen will disappear. Apply a little pressure to the cover glass to press out any additional gas. Disassemble the rest of the iPod as usual.
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Try using a razor blade but with a chisel blade and once you release one catch undo the blade and leave it in and use another blade on the knife until it releases.
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I believe you can see the top of the battery once you've removed the top cover (? Haven't opened one myself.) You can often just relieve the pressure in a swollen battery by piercing the outer covering, as the pressure is just caused by gas being released. It's NOT something you want to do in a confined area where you'll be breathing the gas. Piercing the cover is also not something recommended for the life of the battery, but if it's swollen, it's a step away from being dead already.
When ready, just step outdoors and use a pin or needle. Be careful to try and only pierce the outer wrapping. You do not want to push a piece of metal into the solid battery itself. Consider only doing it when the battery is completely dead, or at least use somewhat thick rubber gloves or insulated pliers to hold the pin/needle.
I haven't tried it with an iPod, but worked with a cell phone battery that was bulging, plus I was able to keep using it for several more months instead of replacing the battery.
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