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Replacing the Kobo Libra H2O Battery

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Re: Replacing the Kobo Libra H2O Battery

#22
post #19

What's the self hosted ecosystem like for these? Let's say I have my own ebooks and audiobooks. Is there whisper sync like features?

No for Whispersync. Kobo only offers synchronization for books purchased through them. On the other hand, KOReader does offer synchronization.

I’m using Calibre Web and it syncs with Kobo just fine. It’s a minor change to the config and then you can sync with your own library.

Self hosted in Docker, I browse to the book I want, add it to a ‘shelf’ that is synchronised. then on the Kobo I press sync. It downloads.

I used a guide that was something like this:

https://jccpalmer.com/posts/setting-up-kobo-sync-with-calibr...

Re: Replacing the Kobo Libra H2O Battery

#24
post #18

Earlier quoted context omitted.

That would explain why mine is increasingly lagging as it ages. Unfortunately, the libra H2O went with eMMC for water resistance, so replacement is slightly more involved.

Odd. The Libra 2 (the successor to the Libra H2O) had a uSD card with a conformance coating over it. Of course, the Libra Colour uses eMMC. I wonder why then went back and forth then back again. (All three are advertised as water resistant.)

The term you were looking for is conformal coating.

Re: Replacing the Kobo Libra H2O Battery

#25
post #11

While diving into R/C hobby, I learned that all the batteries within one technology are pretty much the same. Like all Li-Ion batteries have nominal voltage about 3.6V-3.7V, and full charge at about 4.25V, depending on how risky you are today (yes, there are some minor variations in rated voltages, but not like 10x). Just because chemistry. For lower current (heat losses) you just connect the cells in series, so you…

back in my day we used to upcycle old 18650s from old laptop batteries to use for Nokia phones. Since back in the day phone batteries were basically just insert-in and held by a clip-on backplate, it was just a question of fabricating some sort of a replacement backplate, tape on some batteries, reuse the charging protection board with the connector from the original phone battery and wire it together. It easily doubled the size, looked like a prop from an amateur terrorist movie, but battery life was a week+ ;-)

Re: Replacing the Kobo Libra H2O Battery

#26
post #7

That is pretty cool and looks easy enough to do. I have never seen batteries like that original one seems to be, it looks quite malleable? Is that normal for it? Has anyone seen batteries like that in other products? Most of the other things I did replacement have been “harder” batteries.

When pouch shells are tall and wide but thin (to fit thin products) they can be quite malleable indeed. It is very ill advised to bend them though.

Re: Replacing the Kobo Libra H2O Battery

#27
post #4
post #3

The H2O model is water tight. Is there anything about seal on the outer shell to take care of?

The housings are not sealed. At least not on the older Aura H2O models. That model's water proofing achieved by a coating on the PCB. I googled this in a panic when a significant amount of water came flowing from the USB port as I removed it from the bath.

IIRC, that is the V2, the original IIRC had a sealed case, with a plug at the bottom for USB and SD slot.

Re: Replacing the Kobo Libra H2O Battery

#28

What's the self hosted ecosystem like for these? Let's say I have my own ebooks and audiobooks. Is there whisper sync like features?

I just set up Bookbridge (https://github.com/cporcellijr/bookbridge) to do this. It's so new that I can't even endorse it as I just don't know if it works well yet, but this is at least one solution.

Re: Replacing the Kobo Libra H2O Battery

#29

I replaced the screen on my Kobo Clara hd recently after it broke; by far the hardest part was removing the old screen from the glue holding it on to the metal plate. Apparently newer models are much easier to repair. Also, while you have it open (in fact, go and open it just to do this!), replace the internal SD card; they have a tendency to fail; my ereader had been getting very annoying with lag and random reboots…

Can I dump out the image using usb file transfer without resorting to disassembly?

Re: Replacing the Kobo Libra H2O Battery

#30
post #29

I replaced the screen on my Kobo Clara hd recently after it broke; by far the hardest part was removing the old screen from the glue holding it on to the metal plate. Apparently newer models are much easier to repair. Also, while you have it open (in fact, go and open it just to do this!), replace the internal SD card; they have a tendency to fail; my ereader had been getting very annoying with lag and random reboots…

Can I dump out the image using usb file transfer without resorting to disassembly?

I don't believe so (unless you're getting down and dirty with the OS, which, you probably can do since it's Linux and not particularly locked down). There are all manner of partitions on there, whereas the usb just exposes the FAT data partition.
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