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Originally Posted by Renate
Most devices want to "see" a battery. It can be a thermistor or an ID resistor or I²C to a BMS.
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The Poke 2 requires something that can actually deliver a useful current - i.e. an actual, functioning battery, or some other power source connected to the internal battery terminals. It isn't just about what the device thinks is present, but rather that it cannot draw boot power from the charger. It only draws power from the charger once it gets far enough through the boot process to turn on whatever piece of circuitry is necessary to do so. If the battery can't provide enough power to get that far, you're out of luck. Terrible design, and the only device I have ever encountered that behaved this way.
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I just remove the battery cells themselves and reuse the old BMS (the tiny PCB inside the battery pack). You feed that 4V and it's as happy as a pig in ... stuff. I have a half dozen devices so outfitted. Some I modified straight out of the box. It's safer. Verizon had recalls for flaming hot spots.
Of course I realize that my perspective is not normal.
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Not practical for most consumers, but certainly a neat solution to the issue if it fits your workflow :-).
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Here in the 21st century all manufacturers are crappy about replacement parts. I can't think of any tablet/ereader company that offers replacement batteries. Those suckers are glued in and if a user tried to remove one with a sharp screwdriver... Smart phones used to more commonly have removable batteries too. Not any more.
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True, but it wouldn't be a problem if the battery actually lasted properly in the first place. If it was enough to cope with a few years of typical usage, as most such devices from other manufacturers are, then for almost all users replacing it wouldn't even be necessary.
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Still, the question remains: Are Onyx batteries statistically worse than others? Maybe we need a poll.
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Anecdotally, definitely yes, and my own experience also points that way.
Objectively, I don't know - I'm not aware of any data that could usefully answer that question, although I'd love to see it if it exists somewhere public. I have seen a much higher number of threads for Onyx devices with battery issues than would be expected if they failed at rates more typical of other devices, though.