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Forum Index : Microcontroller and PC projects : HP Tablet thing that has an unhappy battery....

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Grogster

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Joined: 31/12/2012
Location: New Zealand
Posts: 9593
Posted: 04:04am 30 Dec 2024
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Battery received.  It is a genuine HP one.  Manufacturer date is July 2018, so it probably has been sitting in it's box since then. (six years or so)

Terminal voltage of the new one is 3.52v
Terminal voltage of the old one is 4.68v

They are a 3v7 battery.

The new one happily sucked about 3A from the charger(full output of the charger) when connected - I left the tablet switched OFF for this 1st charge as per the HP instruction sheet included in the box with the new battery.

I'll keep everyone updated, but I THINK it was worth saving it.

Not very powerful(Atom CPU), but small and light as I mentioned, so I think I can make use of it even just as a logging terminal or something light-duty like that.
Smoke makes things work. When the smoke gets out, it stops!
 
Revlac

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Joined: 31/12/2016
Location: Australia
Posts: 1153
Posted: 01:56pm 30 Dec 2024
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Looks Like it will be ok,  its still a useful little tablet, music player and other things.
Cheers Aaron
Off The Grid
 
Grogster

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Joined: 31/12/2012
Location: New Zealand
Posts: 9593
Posted: 04:29am 31 Dec 2024
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One interesting thing about this unit, is that the embedded SSD is what appears to be a 32GB SD card - not an SSD on a SATA interface.  If you try to install Windoze on it, the installer moans that it cannot find any suitable drives.  It's got Mint-20 on it at the moment, but even Mint says the system drive is an SD card.

More cost-cutting perhaps?

The machine ORIGINALLY came with Windoze on it, so I don't know how they did the install, cos Windoze won't allow you to install to what it thinks is removable media - such as USB sticks or SD cards.  But it DID have Windoze on it from the factory, so perhaps they made a custom image or something.

I do remember it was slow as a snail with Windoze on it - as I would expect, if it was actually running from an embedded SD card pretending to be an SSD.  That was one of the reasons I flattened it and put Mint on it several years ago.

Even with that in mind, Mint is also QUITE slow on that arrangement, and I could understand why too, if the internal drive really IS just an embedded SD card.....

I am toying with the idea of installing Puppy on it, as Puppy boots from USB or an SD card, and then runs totally inside of RAM, so it might work well on this thing.
Smoke makes things work. When the smoke gets out, it stops!
 
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