Hi Russell (and fellow LUV-ers),

On Wed, Sep 18, 2024, at 15:47, Russell Coker wrote:
> On Tuesday, 17 September 2024 22:01:48 AEST Les Kitchen via luv-main wrote:
>> pack without the battery in place.  The Pine64 Pinebook Pro is
>> one such.  To run it without the battery in place, you have to
>> connect up a special by-pass cable.  Most laptops will run fine
>
> Pine64 seems to have a history of not making resiliant power systems.  Yifei 
> has melted at least one PinePhonePro keyboard and the case of a PinePhonePro 
> (in a separate melting incident I think from memory).

Well, I think that's a separate issue.  What I was talking about
was a design question.  In my experience, most mobile phones and
tablets won't run off external power unless there's also a
battery inserted.  The Pinebook Pro is no different in that
respect.  It is different, though, in that you can run it
without battery by wiring up the by-pass cable, which is well
documented on their wiki.  The Purim Librem-5 can run off
external power without a battery.  It's part of the dance you
need to dance if the battery's been too far discharged to boot,
because you need a running system to charge the battery.  But I
*think* the modem will work only if the battery's in place.  I'm
now curious whether Chromebooks can run battery-less — but
running without battery is such an unusual occurrence that it's
probably not well documented for consumer devices.

The power setup for the Pinephone(Pro) keyboard enclosure (with
built-in extra battery) was a bit dodgy, I'll admit.  Mine just
died, even though I took the precaution of taping up the
Pinephone's USB-C port, so I couldn't accidentally plug in a
USB-C power source while it was running inside the keyboard
enclosure.  (The design was such that you could provide power
only through the keyboard's USB-C charging port.)  But I've
never had power problems with either my Pinephone or Pinephone
Pro, over a few years of use.  That's just an experiential
datapoint.  I'm curious under what conditions Yifei had his
meltdowns.

> My experience of Thinkpads has been a long history of them not melting.

Yeah, the Thinkpads are classic solid machines — though I have
no experience with the newer models.


— Smiles, Les.
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