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Appleの初代iPadで、容量は3Gモデルです。モデル番号はA1337。ストーレッジは 16, 32,もしくは64 GBから選べます。修理は簡単で、熱で温めて接着剤を柔らかくする作業が要りません。

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Dead original iPad: should it work plugged in but with dead battery?

I worked on a dead iPad today. The owner thought the battery was dead and so brought a replacement obtained from eBay (in fact, a complete rear shell with battery still glued in place). The original battery indeed read 0V - evidently it'd gone into protective hibernation, but the replacement read 2.5V - probably on the verge of going into hibernation. (Probably not a lot of life left in it, but that's not my concern for the moment.)

We replaced the battery and put it all back together, but still no sign of life. We tried with it plugged into a 1A powebank but still the same. I suspect either a faulty logic board or faulty screen. I'll advise the owner to see if iTunes will recognise it.

But first, my question: should an original iPod boot up when plugged in even with a dead or fully discharged battery (as an iPhone 4 does but not an iPhone 5, to my recollection)?

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The battery has to have at least ~3V in order for the device to boot. The problem with using a smaller 1A charger is that that produces insufficient current to quickly charge the much larger iPad battery. So if you connect the small charger to a low-voltage battery like yours, no, the device will not boot.

You could leave it charged overnight to see if that gets the voltage back to where it should be (~4.2V) and then try to boot. Or get a proper 2A charger :>).

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Thank you Minho. Plugged in, there was no sign of it taking charge (I kicked myself for not having my USB analyser with me to check), but I've just heard that the owner left it plugged in overnight after which it booted successfully. Which confirms what you say.

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Philip Le Riche さん、ありがとうございました!
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