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From: Arno Welzel <usenet@arnowelzel.de>
Newsgroups: comp.mobile.android
Subject: Re: 5 Volt for charging?
Date: Tue, 11 Jun 2024 17:28:57 +0200
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T, 2024-06-09 09:42:

> We just had to run our third Li battery pack off to
> recycling due to the battery swelling.  THis last one
> actually cracked the case.
> 
> So I am thing that I will build her a NiMH pack
> that I can remove the batteries and charge them
> on NiMH friendly charger.
> 
> Two questions:
> 
> 1) Am I right that the charging circuitry is
> in the tablet not he battery pack?

That depends on the tablet. But at least some kind of protection
circuitry is part of the battery pack.

> 2) Am I correct that I I need to do is provide
> a regulated 5 volt souse?

Yes, the tablet may work with regulated 5V. However some Android devices
don't work with a LiIon battery present. I had this issue with an old
"Archos 35 Home Connect"
(<https://arnowelzel.de/en/android-on-a-clock-radio>). The battery once
didn't work any longer and I decided to remove the battery and use the
device with external power only since the device was stationary anyway.
However that didn't work. Without a battery connected the device didn't
even power on even with external power provided.


-- 
Arno Welzel
https://arnowelzel.de