diff --git a/machines/electric_machine.lua b/machines/electric_machine.lua
index 2134728..3096201 100644
--- a/machines/electric_machine.lua
+++ b/machines/electric_machine.lua
@@ -128,6 +128,20 @@ function industrialtest.ElectricMachine.allowMetadataInventoryPut(self,pos,listn
 	return industrialtest.Machine.allowMetadataInventoryPut(self,pos,listname,index,stack,player)
 end
 
+function industrialtest.ElectricMachine.onMetadataInventoryMove(self,pos,fromList,fromIndex,toList,toIndex,count)
+	if toList=="charged" then
+		self:trigger(pos)
+	end
+	industrialtest.Machine.onMetadataInventoryMove(self,pos,fromList,fromIndex,toList,toIndex,count)
+end
+
+function industrialtest.ElectricMachine.onMetadataInventoryPut(self,pos,listname,index,stack)
+	if listname=="charged" then
+		self:trigger(pos)
+	end
+	industrialtest.Machine.onMetadataInventoryPut(self,pos,listname,index,stack)
+end
+
 function industrialtest.ElectricMachine.requestPower(self,pos)
 	if not self.hasPowerOutput then
 		return