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Groups > alt.comp.os.windows-10 > #184345
| From | Larry Wolff <larrywolff@larrywolff.net> |
|---|---|
| Newsgroups | alt.comp.hardware.pc-homebuilt, alt.comp.os.windows-10, sci.electronics.repair |
| Subject | Re: How do I find a power adapter spec for an old Hyundai laptop? |
| Date | 2025-05-08 07:21 -0400 |
| Organization | rocksolid2 (novabbs.org) |
| Message-ID | <1c56e76a52fa8fe792dc99b3e3fcf55641ddb4c6@novabbs.org> (permalink) |
| References | (6 earlier) <vv8cuv$2k0fq$1@dont-email.me> <vverfe$3td2g$1@paganini.bofh.team> <vvgbi2$16qep$1@dont-email.me> <vvglj2$9lt$1@paganini.bofh.team> <vvh33u$1g1d8$1@dont-email.me> |
Cross-posted to 3 groups.
On 5/7/2025 9:58 PM, Paul wrote: >> On Wed, 7 May 2025 15:16:17 -0400, Paul wrote: >> >>> The whole job is not an easy task -- unless the white lettering is >>> still visible on the bottom. >> >> Thanks for looking at it where you noticed there's NOTHING by way of >> description other than the one brand name on the outside top cover. >> >> I made a small mistake in the links to the pictures which I fixed below. >> https://i.postimg.cc/rySRMrvs/hyundai-a.jpg >> https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg >> https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg >> https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg >> https://i.postimg.cc/j27y7YjV/hyundai-e.jpg >> https://i.postimg.cc/4Ng4zRLJ/hyundai-f.jpg >> >> This is a google search for images of a similar 14-inch Hyundai laptop. >> https://www.google.com/search?tbm=isch&q=hyundai+14+laptop >> >> Since a search of images isn't finding ANYTHING like it, I'll rip it open >> where I hope to find what the battery charger voltage & amps is inside. >> >> Thanks for all the advice. >> > > The battery is, if memory serves, 8.4V or two cells in series. > The 8.4V is the fully charged voltage, and 7.4V is closer > to the "nominal" voltage after it settles. Charging it from 12V > makes sense. If a 19V adapter was used, that would be wasteful, > with some amount of heat generated. > > Lithium cells have to be charged with a "precision" charger. > The cells have high energy density (which is why we use them), > but they are also fairly unstable and must be treated with respect. > That's why there are videos of laptop fires. > > You could use any external voltage you wanted, if there was a > buck converter inside, but I don't think they do the design > that way. Someone in a USENET group, used a "generic" adapter > which had a slightly higher voltage than was required, and > about a month later he wrote back to report the laptop no longer > charged the battery and something had broken. I take this as a > sign that the machines are not tolerant of using the wrong voltage. Why is a step down DC to lower DC converter called a buck converter? Shouldn't it be called a variable duty cycle converter instead? I s'pose the name contrasts better with that of a boost converter.
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How do I find a power adapter spec for an old Hyundai laptop? Umberto <canaliumberto@impresatrecolli.com> - 2025-05-01 13:38 -0500
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul in Houston TX <Paul@Houston.Texas> - 2025-05-01 20:33 -0500
Re: How do I find a power adapter spec for an old Hyundai laptop? Randy Jones <randolphJones@randyjones.com> - 2025-05-03 23:17 +0200
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul in Houston TX <Paul@Houston.Texas> - 2025-05-03 17:04 -0500
Re: How do I find a power adapter spec for an old Hyundai laptop? Ivano Rossi <Ivano.Rossi@nospam.tin.it> - 2025-05-04 00:43 +0200
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-03 21:12 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul in Houston TX <Paul@Houston.Texas> - 2025-05-04 00:31 -0500
Re: How do I find a power adapter spec for an old Hyundai laptop? Mark Lloyd <not.email@all.invalid> - 2025-05-04 18:14 +0000
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-04 14:51 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Umberto <canaliumberto@impresatrecolli.com> - 2025-05-07 01:35 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? knuttle <keith_nuttle@yahoo.com> - 2025-05-07 07:33 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-07 15:16 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Uncle Bob <uncle.bob@nospam.net> - 2025-05-07 18:07 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? knuttle <keith_nuttle@yahoo.com> - 2025-05-07 19:55 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? david <this@is.invalid> - 2025-05-08 05:27 -0600
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-07 21:58 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Larry Wolff <larrywolff@larrywolff.net> - 2025-05-08 07:21 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-08 09:08 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Theo <theom+news@chiark.greenend.org.uk> - 2025-05-08 11:06 +0100
Re: How do I find a power adapter spec for an old Hyundai laptop? Peter <confused@nospam.net> - 2025-05-08 12:15 +0100
Re: How do I find a power adapter spec for an old Hyundai laptop? Theo <theom+news@chiark.greenend.org.uk> - 2025-05-08 12:42 +0100
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-08 09:18 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul in Houston TX <Paul@Houston.Texas> - 2025-05-07 22:08 -0500
Re: How do I find a power adapter spec for an old Hyundai laptop? micky <NONONOmisc07@fmguy.com> - 2025-05-08 01:13 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-08 08:28 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? micky <NONONOmisc07@fmguy.com> - 2025-05-08 01:10 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-08 09:42 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Theo <theom+news@chiark.greenend.org.uk> - 2025-05-11 08:33 +0100
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-01 21:37 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Frank Slootweg <this@ddress.is.invalid> - 2025-05-03 12:33 +0000
Re: How do I find a power adapter spec for an old Hyundai laptop? "...winston" <winstonmvp@gmail.com> - 2025-05-01 23:52 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? micky <NONONOmisc07@fmguy.com> - 2025-05-02 01:56 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-02 13:57 -0400
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