Explicitly show plugged state.

Change-Id: I4592382cdcc9e116d3af102fd76057968a6ea874
diff --git a/res/values/strings.xml b/res/values/strings.xml
index c67c06c..3b55972 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -117,6 +117,8 @@
     <!-- Battery Info screen. Label for a status item.  Used for diagnostic info screens, precise translation isn't needed -->
     <string name="battery_info_status_label">Battery status:</string>
     <!-- Battery Info screen. Label for a status item.  Used for diagnostic info screens, precise translation isn't needed -->
+    <string name="battery_info_power_label">Power plug:</string>
+    <!-- Battery Info screen. Label for a status item.  Used for diagnostic info screens, precise translation isn't needed -->
     <string name="battery_info_scale_label">Battery scale:</string>
     <!-- Battery Info screen. Label for a status item.  Used for diagnostic info screens, precise translation isn't needed -->
     <string name="battery_info_level_label">Battery level:</string>
@@ -157,6 +159,13 @@
     <!-- Battery Info screen. Value for a status item.  Used for diagnostic info screens, precise translation isn't needed -->
     <string name="battery_info_status_full">Full</string>
 
+    <!-- Battery Info screen. Units shown after a value.  Used for diagnostic info screens, precise translation isn't needed -->
+    <string name="battery_info_power_unplugged">Unplugged</string>
+    <string name="battery_info_power_ac">AC</string>
+    <string name="battery_info_power_usb">USB</string>
+    <string name="battery_info_power_ac_usb">AC+USB</string>
+    <string name="battery_info_power_unknown">Unknown</string>
+    
     <!-- Battery Info screen. Value for a status item.  Used for diagnostic info screens, precise translation isn't needed -->
     <string name="battery_info_health_unknown">Unknown</string>
     <!-- Battery Info screen. Value for a status item.  Used for diagnostic info screens, precise translation isn't needed -->