I Replaced My Kobo Libra H2O Battery with a $10 AliExpress Part
Replacing the Kobo Libra H2O Battery
After years of faithful service, the author's Kobo Libra H2O started losing its charge within an hour. Fearing a complex repair, they discovered a cheap replacement battery on AliExpress and successfully swapped it out with just a soldering iron. The guide covers locating the right battery (PR-158098N), safely detaching the old one, soldering in the new, and reassembling the device—giving the eReader a new lease on life and avoiding the need for an upgrade.
These days we are far too quick to jump on board the obsolescence train.
- askvictor
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 until I did this, now runs like a dream. You'll need to copy your old sd card across or find an image somewhere (they exist on some forums) if it's too far gone (I got the bulk of my using DD rescue but there was a _lot_ of errors)
- deepsun
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 got multiplies 2x, 3x, ... of the same voltages (but never fractional, like 1.5x). They typically have more wires to balance the charges between the cells (so the total wires count is #cells+1).
There are also "protected" batteries, which means there's an electronic chip that protects battery from over/under charging, but authors' doesn't seem to have that. It's just a regular unprotected 1-cell Li-Ion cell, and the device provides the protection.
That means author could as well connect to any battery of 3.5V -- 4.2V, not going through the hoops of looking for their particular reader, as long as it's thin enough to fit. Smaller batteries would just have less charge.
PS: I would double-check it's really unprotected tho.
- kwar13
I wish repairing stuff was a bit more accessible to the average person.
- BeetleB
This is actually terrifying.
Ereaders tend to be fairly unique. If my Kobo Forma dies, there's no other Kobo I can replace it with (in terms of size). I don't want to change brands and deal with yet another OS.
- diiaann
Glad to see other kobo enthusiasts. I love the Kobo style buttons.