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Originally Posted by DomesticExtremis
I shouldn't worry too much about the battery exploding, they have protection circuitry on the cell to prevent overcharge/overdischarge and short circuit, as well as a charging chip in the eReader.
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Good to know! Then I am happy to take the time to try all kinds of tricks with it
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It sounds like it has been left in a discharged state for a long time and this has raised the internal resistance of the battery, thus it seems to charge quickly but doesn't hold that charge for too long.
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I don't have much information from the previous owner, but he mentioned that he had already got a replacement Clara. I imagine the device froze on him and he replaced it and just put it away until finally deciding to sell it. So yes, you might be right.
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I would back up your library via USB and then proceed to open it up.
It is a tricky procedure, there are effectively two bezels, the one you can see and a "smoked acrylic" one that is the light for the IR touch screen. You should aim to try and separate the two and leave the inner bezel attached to the substrate,
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Interesting, @frostschutz says the exact opposite, to remove them as one unit and NOT separate them. Would help to know why each of you recommend what you recommend! From what I am reading and seeing online, I imagine one approach makes disassembly easier while the other makes reassembly easier?
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The gloop they use to seal and stick it together is horrible and messy - I found Zippo lighter fluid very helpful for softening it and reducing its stickiness.
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YES, I recently started cleaning and lubricating vintage film lenses, and lighter fluid is a MIRACULOUS THING!
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Once you have extracted the battery, you should be able to obtain one of similar capacity and dimensions from the usual sources (Ebay/amazon/alibaba etc). If you aren't scared of using a slodering iron, you can reuse the protection circuitry from the old one and save a few pennies.
HTH
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Can definitely solder, not a problem. But I think I might just wait till the current battery is proven to be so bad the device is unusable.
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Originally Posted by rcentros
That's what batteries do when their capacity is shot. Fast charging, fast discharging. I suppose it could be something else, but this is my first guess.
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What I found surprising was that it would "jump" - in both directions, meaning increase by 20-30% in a few seconds, as well as drop an equal amount. And this was happening even when the device was powered off. That part didn't make sense to me, though I suppose CPU load to boot-up would explain it ...