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<title>org.freedesktop.UPower.Device: UPower Reference Manual</title>
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<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span>
<a href="#Device.description" class="shortcut">Description</a></span><span id="nav_interfaces"> <span class="dim">|</span>
<a href="#Device.implemented-interfaces" class="shortcut">Implemented Interfaces</a></span><span id="nav_properties"> <span class="dim">|</span>
<a href="#Device.properties" class="shortcut">Properties</a></span>
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<div class="refentry">
<a name="Device"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle">org.freedesktop.UPower.Device</span></h2>
<p>org.freedesktop.UPower.Device — Device interface</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<h2>Methods</h2>
<pre class="synopsis"><a class="link" href="Device.html#Device.Refresh">Refresh</a>()
<a class="link" href="Device.html#Device.GetHistory">GetHistory</a>(in's'type,
in'u'timespan,
in'u'resolution,
out'a(udu)'data)
<a class="link" href="Device.html#Device.GetStatistics">GetStatistics</a>(in's'type,
out'a(dd)'data)
</pre>
</div>
<div class="refsect1">
<a name="id-1.2.4.4"></a><h2>Implemented Interfaces</h2>
<p>
Objects implementing org.freedesktop.UPower.Device also implements
org.freedesktop.DBus.Introspectable,
org.freedesktop.DBus.Properties
</p>
</div>
<div class="refsect1">
<a name="id-1.2.4.5"></a><h2>Properties</h2>
<pre class="synopsis"><a class="link" href="Device.html#Device:NativePath">'NativePath'</a>read's'
<a class="link" href="Device.html#Device:Vendor">'Vendor'</a>read's'
<a class="link" href="Device.html#Device:Model">'Model'</a>read's'
<a class="link" href="Device.html#Device:Serial">'Serial'</a>read's'
<a class="link" href="Device.html#Device:UpdateTime">'UpdateTime'</a>read't'
<a class="link" href="Device.html#Device:Type">'Type'</a>read'u'
<a class="link" href="Device.html#Device:PowerSupply">'PowerSupply'</a>read'b'
<a class="link" href="Device.html#Device:HasHistory">'HasHistory'</a>read'b'
<a class="link" href="Device.html#Device:HasStatistics">'HasStatistics'</a>read'b'
<a class="link" href="Device.html#Device:Online">'Online'</a>read'b'
<a class="link" href="Device.html#Device:Energy">'Energy'</a>read'd'
<a class="link" href="Device.html#Device:EnergyEmpty">'EnergyEmpty'</a>read'd'
<a class="link" href="Device.html#Device:EnergyFull">'EnergyFull'</a>read'd'
<a class="link" href="Device.html#Device:EnergyFullDesign">'EnergyFullDesign'</a>read'd'
<a class="link" href="Device.html#Device:EnergyRate">'EnergyRate'</a>read'd'
<a class="link" href="Device.html#Device:Voltage">'Voltage'</a>read'd'
<a class="link" href="Device.html#Device:Luminosity">'Luminosity'</a>read'd'
<a class="link" href="Device.html#Device:TimeToEmpty">'TimeToEmpty'</a>read'x'
<a class="link" href="Device.html#Device:TimeToFull">'TimeToFull'</a>read'x'
<a class="link" href="Device.html#Device:Percentage">'Percentage'</a>read'd'
<a class="link" href="Device.html#Device:Temperature">'Temperature'</a>read'd'
<a class="link" href="Device.html#Device:IsPresent">'IsPresent'</a>read'b'
<a class="link" href="Device.html#Device:State">'State'</a>read'u'
<a class="link" href="Device.html#Device:IsRechargeable">'IsRechargeable'</a>read'b'
<a class="link" href="Device.html#Device:Capacity">'Capacity'</a>read'd'
<a class="link" href="Device.html#Device:Technology">'Technology'</a>read'u'
<a class="link" href="Device.html#Device:WarningLevel">'WarningLevel'</a>read'u'
<a class="link" href="Device.html#Device:IconName">'IconName'</a>read's'
</pre>
</div>
<div class="refsect1">
<a name="id-1.2.4.6"></a><h2>Description</h2>
<p>
</p>
<p>
Objects implementing this interface are usually discovered through
the <code class="literal">org.freedesktop.UPower</code> interface on
the <code class="literal">/org/freedesktop/UPower</code> object on
the D-Bus system bus service with the well-known
name <code class="literal">org.freedesktop.UPower</code> using
the
<code class="function">EnumerateDevices</code>
method.
</p>
<p>
</p>
<p>
</p>
<div class="informalexample"><pre class="programlisting">
$ dbus-send --print-reply \
--system \
--dest=org.freedesktop.UPower \
/org/freedesktop/UPower/devices/battery_BAT0 \
org.freedesktop.DBus.Properties.GetAll \
string:org.freedesktop.UPower.Device
method return sender=:1.386 -> dest=:1.477 reply_serial=2
array [
dict entry(
string "native-path"
variant string "/sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:01/PNP0C09:00/PNP0C0A:00/power_supply/BAT0"
)
dict entry(
string "vendor"
variant string "SONY"
)
dict entry(
string "model"
variant string "42T4568"
)
dict entry(
string "serial"
variant string "4179"
)
dict entry(
string "update-time"
variant uint64 1226417875
)
dict entry(
string "type"
variant uint 2
)
dict entry(
string "power-supply"
variant boolean true
)
dict entry(
string "has-history"
variant boolean true
)
dict entry(
string "has-statistics"
variant boolean true
)
dict entry(
string "online"
variant boolean false
)
dict entry(
string "energy"
variant double 72.85
)
dict entry(
string "energy-empty"
variant double 0
)
dict entry(
string "energy-full"
variant double 74.55
)
dict entry(
string "energy-full-design"
variant double 74.88
)
dict entry(
string "energy-rate"
variant double 0
)
dict entry(
string "voltage"
variant double 16.415
)
dict entry(
string "time-to-empty"
variant int64 0
)
dict entry(
string "time-to-full"
variant int64 0
)
dict entry(
string "percentage"
variant double 97.7197
)
dict entry(
string "is-present"
variant boolean true
)
dict entry(
string "state"
variant uint 3
)
dict entry(
string "is-rechargeable"
variant boolean true
)
dict entry(
string "capacity"
variant double 100
)
dict entry(
string "technology"
variant uint 1
)
]
</pre></div>
<p>
</p>
<p>
</p>
<p>
Unless otherwise noted, an empty string or the value 0 in a
property on this interface means not set.
</p>
<p>
</p>
</div>
<div class="refsect1">
<a name="id-1.2.4.7"></a><h2>Details</h2>
<div class="refsect2">
<a name="id-1.2.4.7.2"></a><h3>
<a name="Device.Refresh"></a>Refresh ()</h3>
<pre class="programlisting">Refresh ()</pre>
</div>
<p>
Refreshes the data collected from the power source.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<div class="refsect3">
<a name="id-1.2.4.7.5"></a><h4>Errors</h4>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>org.freedesktop.UPower.Device.GeneralError</code></em>:</span></p></td>
<td>if an error occured while refreshing</td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.7.6"></a><h4>Permissions</h4>
<p class="permission">Callers need the org.freedesktop.upower.refresh-power-source authorization</p>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.7.7"></a><h3>
<a name="Device.GetHistory"></a>GetHistory ()</h3>
<pre class="programlisting">GetHistory (in's'type,
in'u'timespan,
in'u'resolution,
out'a(udu)'data)</pre>
</div>
<p>
Gets history for the power device that is persistent across reboots.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>type</code></em>:</span></p></td>
<td>The type of history.
Valid types are <code class="literal">rate</code> or <code class="literal">charge</code>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>timespan</code></em>:</span></p></td>
<td>The amount of data to return in seconds, or 0 for all.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>resolution</code></em>:</span></p></td>
<td>
The approximate number of points to return.
A higher resolution is more accurate, at the expense of plotting speed.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>data</code></em>:</span></p></td>
<td>
The history data for the power device, if the device supports history.
Data is ordered from the earliest in time, to the newest data point.
Each element contains the following members:
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<span class="bold"><strong>time: </strong></span>
The time value in seconds from the <code class="literal">gettimeofday()</code> method.
</li>
<li class="listitem">
<span class="bold"><strong>value: </strong></span>
The data value, for instance the rate in W or the charge in %.
</li>
<li class="listitem">
<span class="bold"><strong>state: </strong></span>
The state of the device, for instance <code class="literal">charging</code> or
<code class="literal">discharging</code>.
</li>
</ul></div>
</td>
</tr>
</tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.7.10"></a><h3>
<a name="Device.GetStatistics"></a>GetStatistics ()</h3>
<pre class="programlisting">GetStatistics (in's'type,
out'a(dd)'data)</pre>
</div>
<p>
Gets statistics for the power device that may be interesting
to show on a graph in the session.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>type</code></em>:</span></p></td>
<td>The mode for the statistics.
Valid types are <code class="literal">charging</code> or <code class="literal">discharging</code>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>data</code></em>:</span></p></td>
<td>
The statistics data for the power device.
Each element contains the following members:
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<span class="bold"><strong>value: </strong></span>
The value of the percentage point, usually in seconds
</li>
<li class="listitem">
<span class="bold"><strong>accuracy: </strong></span>
The accuracy of the prediction in percent.
</li>
</ul></div>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="id-1.2.4.8"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="id-1.2.4.8.2"></a><h3>
<a name="Device:NativePath"></a>The "NativePath" property</h3>
<pre class="programlisting">'NativePath'read's'
</pre>
</div>
<p>
OS specific native path of the power source. On Linux this
is the sysfs path, for
example <code class="literal">/sys/devices/LNXSYSTM:00/device:00/PNP0C0A:00/power_supply/BAT0</code>. Is
blank if the device is being driven by a user space
driver.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.5"></a><h3>
<a name="Device:Vendor"></a>The "Vendor" property</h3>
<pre class="programlisting">'Vendor'read's'
</pre>
</div>
<p>
Name of the vendor of the battery.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.8"></a><h3>
<a name="Device:Model"></a>The "Model" property</h3>
<pre class="programlisting">'Model'read's'
</pre>
</div>
<p>
Name of the model of this battery.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.11"></a><h3>
<a name="Device:Serial"></a>The "Serial" property</h3>
<pre class="programlisting">'Serial'read's'
</pre>
</div>
<p>
Unique serial number of the battery.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.14"></a><h3>
<a name="Device:UpdateTime"></a>The "UpdateTime" property</h3>
<pre class="programlisting">'UpdateTime'read't'
</pre>
</div>
<p>
The point in time (seconds since the Epoch Jan 1, 1970
0:00 UTC) that data was read from the power source.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.17"></a><h3>
<a name="Device:Type"></a>The "Type" property</h3>
<pre class="programlisting">'Type'read'u'
</pre>
</div>
<p>
Type of power source.
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<span class="bold"><strong>0: </strong></span>Unknown</li>
<li class="listitem">
<span class="bold"><strong>1: </strong></span>Line Power</li>
<li class="listitem">
<span class="bold"><strong>2: </strong></span>Battery</li>
<li class="listitem">
<span class="bold"><strong>3: </strong></span>Ups</li>
<li class="listitem">
<span class="bold"><strong>4: </strong></span>Monitor</li>
<li class="listitem">
<span class="bold"><strong>5: </strong></span>Mouse</li>
<li class="listitem">
<span class="bold"><strong>6: </strong></span>Keyboard</li>
<li class="listitem">
<span class="bold"><strong>7: </strong></span>Pda</li>
<li class="listitem">
<span class="bold"><strong>8: </strong></span>Phone</li>
</ul></div>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.21"></a><h3>
<a name="Device:PowerSupply"></a>The "PowerSupply" property</h3>
<pre class="programlisting">'PowerSupply'read'b'
</pre>
</div>
<p>
If the power device is used to supply the system.
This would be set TRUE for laptop batteries and UPS devices,
but set FALSE for wireless mice or PDAs.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.24"></a><h3>
<a name="Device:HasHistory"></a>The "HasHistory" property</h3>
<pre class="programlisting">'HasHistory'read'b'
</pre>
</div>
<p>
If the power device has history.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.27"></a><h3>
<a name="Device:HasStatistics"></a>The "HasStatistics" property</h3>
<pre class="programlisting">'HasStatistics'read'b'
</pre>
</div>
<p>
If the power device has statistics.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.30"></a><h3>
<a name="Device:Online"></a>The "Online" property</h3>
<pre class="programlisting">'Online'read'b'
</pre>
</div>
<p>
Whether power is currently being provided through line power.
This property is only valid if the property
<code class="literal">type</code>
has the value "line-power".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.33"></a><h3>
<a name="Device:Energy"></a>The "Energy" property</h3>
<pre class="programlisting">'Energy'read'd'
</pre>
</div>
<p>
Amount of energy (measured in Wh) currently available in
the power source.
</p>
<p>
This property is only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.37"></a><h3>
<a name="Device:EnergyEmpty"></a>The "EnergyEmpty" property</h3>
<pre class="programlisting">'EnergyEmpty'read'd'
</pre>
</div>
<p>
Amount of energy (measured in Wh) in the power source when
it's considered to be empty.
</p>
<p>
This property is only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.41"></a><h3>
<a name="Device:EnergyFull"></a>The "EnergyFull" property</h3>
<pre class="programlisting">'EnergyFull'read'd'
</pre>
</div>
<p>
Amount of energy (measured in Wh) in the power source when
it's considered full.
</p>
<p>
This property is only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.45"></a><h3>
<a name="Device:EnergyFullDesign"></a>The "EnergyFullDesign" property</h3>
<pre class="programlisting">'EnergyFullDesign'read'd'
</pre>
</div>
<p>
Amount of energy (measured in Wh) the power source is
designed to hold when it's considered full.
</p>
<p>
This property is only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.49"></a><h3>
<a name="Device:EnergyRate"></a>The "EnergyRate" property</h3>
<pre class="programlisting">'EnergyRate'read'd'
</pre>
</div>
<p>
Amount of energy being drained from the source, measured
in W. If positive, the source is being discharged, if
negative it's being charged.
</p>
<p>
This property is only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.53"></a><h3>
<a name="Device:Voltage"></a>The "Voltage" property</h3>
<pre class="programlisting">'Voltage'read'd'
</pre>
</div>
<p>
Voltage in the Cell or being recorded by the meter.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.56"></a><h3>
<a name="Device:Luminosity"></a>The "Luminosity" property</h3>
<pre class="programlisting">'Luminosity'read'd'
</pre>
</div>
<p>
Luminosity being recorded by the meter.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.59"></a><h3>
<a name="Device:TimeToEmpty"></a>The "TimeToEmpty" property</h3>
<pre class="programlisting">'TimeToEmpty'read'x'
</pre>
</div>
<p>
Number of seconds until the power source is considered empty.
Is set to 0 if unknown.
</p>
<p>
This property is only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.63"></a><h3>
<a name="Device:TimeToFull"></a>The "TimeToFull" property</h3>
<pre class="programlisting">'TimeToFull'read'x'
</pre>
</div>
<p>
Number of seconds until the power source is considered full.
Is set to 0 if unknown.
</p>
<p>
This property is only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.67"></a><h3>
<a name="Device:Percentage"></a>The "Percentage" property</h3>
<pre class="programlisting">'Percentage'read'd'
</pre>
</div>
<p>
The amount of energy left in the power source expressed as
a percentage between 0 and 100. Typically this is the same as
(<code class="literal">energy</code> -
<code class="literal">energy-empty</code>) /
(<code class="literal">energy-full</code> -
<code class="literal">energy-empty</code>).
However, some primitive power sources are capable of only
reporting percentages and in this case the energy-*
properties will be unset while this property is set.
</p>
<p>
This property is only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.71"></a><h3>
<a name="Device:Temperature"></a>The "Temperature" property</h3>
<pre class="programlisting">'Temperature'read'd'
</pre>
</div>
<p>
The temperature of the device in degrees Celsius. This property is
only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.74"></a><h3>
<a name="Device:IsPresent"></a>The "IsPresent" property</h3>
<pre class="programlisting">'IsPresent'read'b'
</pre>
</div>
<p>
If the power source is present in the bay.
This field is required as some batteries are hot-removable, for example
expensive UPS and most laptop batteries.
</p>
<p>
This property is only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.78"></a><h3>
<a name="Device:State"></a>The "State" property</h3>
<pre class="programlisting">'State'read'u'
</pre>
</div>
<p>
The battery power state.
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<span class="bold"><strong>0: </strong></span>Unknown</li>
<li class="listitem">
<span class="bold"><strong>1: </strong></span>Charging</li>
<li class="listitem">
<span class="bold"><strong>2: </strong></span>Discharging</li>
<li class="listitem">
<span class="bold"><strong>3: </strong></span>Empty</li>
<li class="listitem">
<span class="bold"><strong>4: </strong></span>Fully charged</li>
<li class="listitem">
<span class="bold"><strong>5: </strong></span>Pending charge</li>
<li class="listitem">
<span class="bold"><strong>6: </strong></span>Pending discharge</li>
</ul></div>
<p>
This property is only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.83"></a><h3>
<a name="Device:IsRechargeable"></a>The "IsRechargeable" property</h3>
<pre class="programlisting">'IsRechargeable'read'b'
</pre>
</div>
<p>
If the power source is rechargeable.
</p>
<p>
This property is only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.87"></a><h3>
<a name="Device:Capacity"></a>The "Capacity" property</h3>
<pre class="programlisting">'Capacity'read'd'
</pre>
</div>
<p>
The capacity of the power source expressed as a percentage between 0 and 100.
The capacity of the battery will reduce with age.
A capacity value less than 75% is usually a sign that you should renew your battery.
Typically this value is the same as
(<code class="literal">full-design</code> /
<code class="literal">full</code>) * 100.
However, some primitive power sources are not capable reporting capacity
and in this case the capacity property will be unset.
</p>
<p>
This property is only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.91"></a><h3>
<a name="Device:Technology"></a>The "Technology" property</h3>
<pre class="programlisting">'Technology'read'u'
</pre>
</div>
<p>
Technology used in the battery:
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<span class="bold"><strong>0: </strong></span>Unknown</li>
<li class="listitem">
<span class="bold"><strong>1: </strong></span>Lithium ion</li>
<li class="listitem">
<span class="bold"><strong>2: </strong></span>Lithium polymer</li>
<li class="listitem">
<span class="bold"><strong>3: </strong></span>Lithium iron phosphate</li>
<li class="listitem">
<span class="bold"><strong>4: </strong></span>Lead acid</li>
<li class="listitem">
<span class="bold"><strong>5: </strong></span>Nickel cadmium</li>
<li class="listitem">
<span class="bold"><strong>6: </strong></span>Nickel metal hydride</li>
</ul></div>
<p>
This property is only valid if the property
<code class="literal">type</code>
has the value "battery".
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.96"></a><h3>
<a name="Device:WarningLevel"></a>The "WarningLevel" property</h3>
<pre class="programlisting">'WarningLevel'read'u'
</pre>
</div>
<p>
Warning level of the battery:
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<span class="bold"><strong>0: </strong></span>Unknown</li>
<li class="listitem">
<span class="bold"><strong>1: </strong></span>None</li>
<li class="listitem">
<span class="bold"><strong>2: </strong></span>Discharging (only for UPSes)</li>
<li class="listitem">
<span class="bold"><strong>3: </strong></span>Low</li>
<li class="listitem">
<span class="bold"><strong>4: </strong></span>Critical</li>
<li class="listitem">
<span class="bold"><strong>5: </strong></span>Action</li>
</ul></div>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
<hr>
<div class="refsect2">
<a name="id-1.2.4.8.100"></a><h3>
<a name="Device:IconName"></a>The "IconName" property</h3>
<pre class="programlisting">'IconName'read's'
</pre>
</div>
<p>
An icon name, following the Icon Naming Specification
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody></tbody>
</table></div>
</div>
</div>
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