Mailinglist Archive: opensuse (1620 mails)

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Re: [opensuse] UPS : replacing battery with 12 volt Jelly Car Battery
On 11/25/2014 02:57 PM, Anton Aylward wrote:
Why should any of this 'conversion' be inside the laptop (or the phone
or tablet) since, when running the DC from the battery is stable?
(or at least just dropping rather than doing ± AC).

Compare the battery voltage with the operating voltages for the
devices. If they're not the same, and they're not, you'll need to
convert to the required voltages. CPUs, for example, have lowered
operating voltage from 5V, several years ago, to about 2V for modern
ones. The reasons for this are heat dissipation and smaller dimensions
within the device.
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