MSA-2409: Hello,

I modified several existing official apps to make this Smartapp.  Was looking for a way to automatically shut off my smart power strip once a battery charger finished.  Think this could be good for any "vampire" type devices.  
Have included multiple fields that can be customized by the end user and the ability to notify as well.  Completed testing on my end and live logging matches what I would expect.
Since I am new to SmartThings, this is my first submission.  If you have any questions, or need anything please let me know.

Thanks.

smartapps/jg/charge-complete.src/charge-complete.groovy

@@ -0,0 +1,97 @@
+/**
+ *  Charge Complete
+ *
+ *  Copyright 2017 JG
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ *  in compliance with the License. You may obtain a copy of the License at:
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed
+ *  on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License
+ *  for the specific language governing permissions and limitations under the License.
+ *
+ */
+definition(
+    name: "Charge Complete",
+    namespace: "JG",
+    author: "JG",
+		description: "Turn things off if charging is complete.",
+    category: "Green Living",
+    iconUrl: "https://s3.amazonaws.com/smartapp-icons/Meta/light_outlet.png",
+    iconX2Url: "https://s3.amazonaws.com/smartapp-icons/Meta/light_outlet@2x.png",
+    iconX3Url: "https://s3.amazonaws.com/smartapp-icons/Meta/light_outlet@2x.png"
+)
+
+preferences {
+	section {
+		input(name: "meter", type: "capability.powerMeter", title: "When This Power Meter...", required: true, multiple: false, description: null)
+        input(name: "threshold", type: "number", title: "Reports Below...(Default 1 Watt)", required: false, description: "in either watts or kw.")
+        input (name: "delay", type: "number", title: "Delay Before Turning Off...(Default 5 Mins)", required: false, description: "delay in minutes.")
+    }
+    section {
+    	input(name: "switches", type: "capability.switch", title: "Turn Off These Switches", required: true, multiple: true, description: null)
+    }
+    section {
+        input("recipients", "contact", title: "Send notifications to") {
+            input(name: "sms", type: "phone", title: "Send A Text To", description: null, required: false)
+            input(name: "pushNotification", type: "bool", title: "Send a push notification", description: null, defaultValue: true)
+        }
+    }
+}
+
+def installed() {
+	log.debug "Installed with settings: ${settings}"
+	initialize()
+}
+
+def updated() {
+	log.debug "Updated with settings: ${settings}"
+	unsubscribe()
+	initialize()
+}
+
+def initialize() {
+	subscribe(meter, "power", meterHandler)
+}
+
+def meterHandler(evt) {
+    def meterValue = evt.value as double
+    //Give user option to input custom value.  If not, default to 1 Watt.
+    def thresholdValue = (threshold != null && threshold != "") ? threshold : 1
+    //Give user option to input custom value.  If not, default to 5 Minutes.
+    def delayValue = (delay != null && delay != "") ? delay * 60 : 300
+    if (meterValue < thresholdValue) {
+	    log.debug "${meter} reported energy consumption below ${thresholdValue} Watt(s). Turning of switches in ${delayValue/60} minute(s)."
+        //Give 5 (default) minutes for status to update.  In some cases, issues arrise from slow to report/update values if a delay isn't given.
+        runIn(delayValue, scheduledHandler)
+    }else {
+    	//Check for updated values during delay time.  If found, cancel switch off command.
+    	log.debug "${meter} - Charging is still in progress (${meterValue} W). Cancelling Switch Power Off (if schedule)."
+        unschedule(scheduledHandler)
+    }
+}
+
+def scheduledHandler() {
+	log.debug "Charge Complete - SmartApp: scheduledHandler executed at ${new Date()}"    
+	log.debug "Turning off ${meter}"
+    sendMessage()
+    switches.off()
+}
+
+void sendMessage() {
+  def msg = "Charging Complete for ${meter}."
+  log.info msg
+  if (location.contactBookEnabled) {
+        sendNotificationToContacts(msg, recipients)
+    }
+    else {
+        if (sms) {
+            sendSms(sms, msg)
+        }
+        if (pushNotification) {
+            sendPush(msg)
+        }
+    }
+}