diff --git a/manifests/menubar.pp b/manifests/menubar.pp
new file mode 100644
index 0000000..7755ae6
--- /dev/null
+++ b/manifests/menubar.pp
@@ -0,0 +1,13 @@
+# Internal: Restart the Menubar aka the SystemUIServer when necessary.
+#
+# Example
+#
+#   boxen::osx_defaults { 'Do a thing':
+#     # ... other stuff here ...
+#     notify => Exec['killall SystemUIServer'];
+#   }
+class osx::menubar {
+  exec { 'killall SystemUIServer':
+    refreshonly => true
+  }
+}
diff --git a/manifests/menubar/show_battery_percent.pp b/manifests/menubar/show_battery_percent.pp
new file mode 100644
index 0000000..834d819
--- /dev/null
+++ b/manifests/menubar/show_battery_percent.pp
@@ -0,0 +1,18 @@
+# Public: Shows battery percentage
+#
+# Example
+#
+#   include osx::menubar::show_battery_percent
+#
+class osx::menubar::show_battery_percent {
+  include osx::menubar
+
+  boxen::osx_defaults { 'Shows battery percentage':
+    domain => 'com.apple.menuextra.battery',
+    key    => 'ShowPercent',
+    type   => 'string',
+    value  => 'YES',
+    user   => $::boxen_user,
+    notify => Exec['killall SystemUIServer'];
+  }
+}
diff --git a/spec/classes/menubar/show_battery_percent_spec.rb b/spec/classes/menubar/show_battery_percent_spec.rb
new file mode 100644
index 0000000..887036d
--- /dev/null
+++ b/spec/classes/menubar/show_battery_percent_spec.rb
@@ -0,0 +1,11 @@
+require 'spec_helper'
+
+describe 'osx::menubar::show_battery_percent' do
+  should contain_boxen__osx_defaults('Shows battery percentage').with({
+    :key    => 'ShowPercent',
+    :domain => 'com.apple.menuextra.battery',
+    :value  => 'YES',
+    :user   => facts[:boxen_user],
+    :notify => 'Exec[killall SystemUIServer]'
+  })
+end
diff --git a/spec/classes/menubar_spec.rb b/spec/classes/menubar_spec.rb
new file mode 100644
index 0000000..3c951c5
--- /dev/null
+++ b/spec/classes/menubar_spec.rb
@@ -0,0 +1,7 @@
+require 'spec_helper'
+
+describe 'osx::menubar' do
+  it do
+    should contain_exec('killall SystemUIServer').with( {:refreshonly => true} )
+  end
+end