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Add some info on solar MPPT controller and link to PDF docs.

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And local link for Jinko PV panel docs.
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@ -20,13 +20,18 @@ and AA/AAA batteries (and phones). Much bigger flexi solar panels arrived in 200
and a second, larger, battery around the same time.</p>
<p>In 2018 two new PV panels were bought.
These <a href="https://www.jinkosolar.com/ftp/EN-Eagles-270PP-60_rev2014-1.pdf">Jinko JKM270PP-60</a>
These <a href="/expofiles/documents/hardware/EN-Eagles-270PP-60_rev2014-1.pdf">Jinko JKM270PP-60</a> (<a href="https://www.jinkosolar.com/ftp/EN-Eagles-270PP-60_rev2014-1.pdf">original site</a>)
beasts are 255W (peak), ~16% efficient and weigh 19kg each. They are glass-fronted, aluminium-framed, and measure 1650 x 992 x 40mm.
The intention is that they will be installed at Steinbr&uuml;ckenh&ouml;hle top camp
and that the light-weight panels already there will be transferred to the Organh&ouml;hle
bivvy camp. The rest of this text describes the situation
These were installed at Steinbr&uuml;ckenh&ouml;hle top camp
and the light-weight panels already there can be used at another camp. The rest of this text describes the situation
in 2017 before these Jinkos were bought. Also new in 2018 is a new set of 12V sockets (car type). This page will be updated when they have been installed.
<p>An MPPT controller charges the battery from the panels. It's a <a
href="/expofiles/documents/hardware/V117_MPPT_Solar_Charge_Controller.pdf">MakeSkyBlue
S3 series</a>. You can program the hours of operation (24hr), max
charge voltage (14.2), float charge voltage (13.2), and battery load
cutoff voltage (11.9V)</p>
<p>The system (in 2017) was two independent systems running in parallel.
<ul>
<li>The Big system uses the three big solar cells on the big wooden frame the big battery and the cable with the (hopfully) obvious connectors on it</li>