diff --git a/flow/cmd_manager.js b/flow/cmd_manager.js
index 4ead96b..07e12c6 100644
--- a/flow/cmd_manager.js
+++ b/flow/cmd_manager.js
@@ -2616,7 +2616,7 @@ exports.install = function(instance) {
 
     //účinník
     else if (register == 77) {
-      let power_factor = Math.cos(bytesToInt(bytes) * 0.1).toFixed(2);
+      let power_factor = Math.cos(bytesToInt(bytes) * 0.1 * (Math.PI / 180)).toFixed(2);
       values["power_factor"] = Number(power_factor);
     }
 
@@ -2629,8 +2629,7 @@ exports.install = function(instance) {
     //energia
     else if (register == 79) {
       let energy = bytesToInt(bytes);
-      //Energiu treba reportovať v kWh -> delit 1000
-      values["energy"] = energy / 1000;
+      values["energy"] = energy / 1000; //energia v kWh -> delit 1000
     }
 
     //doba života
diff --git a/flow/helper/utils.js b/flow/helper/utils.js
index a16210c..9c054aa 100644
--- a/flow/helper/utils.js
+++ b/flow/helper/utils.js
@@ -1,124 +1,112 @@
-function bytesToInt(bytes, numberOfBytes)
-{
-  let buffer = [];
-  if(Array.isArray(bytes))
-  {
-    buffer = bytes.slice(0);
-    if(numberOfBytes != undefined)
-    {
-      buffer = bytes.slice(bytes.length - numberOfBytes);
-    }
-  }
-  else buffer.push(bytes);
-  
-  //var decimal = (buffer[0] << 24) + (buffer[1] << 16) + (buffer[2] << 8) + buffer[3];
-  let l = (buffer.length - 1) * 8;
-  
-  let decimal = 0;
-  for(let i = 0; i < buffer.length; i++)
-  {  
-  	var s = buffer[i] << l;
-    if(l < 8) s = buffer[i]
-  	decimal = decimal + s;
-    
-    l = l - 8;
-
-  }
-  
-  return decimal;
-}
-
-function resizeArray(arr, newSize, defaultValue) {
-    while(newSize > arr.length)
-        arr.push(defaultValue);
-    arr.length = newSize;
-}
-
-longToByteArray = function(/*long*/long) {
-    // we want to represent the input as a 8-bytes array
-    var byteArray = [0, 0, 0, 0, 0, 0, 0, 0];
-  
-    for ( var index = 0; index < byteArray.length; index ++ ) {
-        var byte = long & 0xff;
-        byteArray [ index ] = byte;
-        long = (long - byte) / 256 ;
-    }
-  
-    return byteArray;
-  };
-
-function addDays(date, days) {
-    var result = new Date(date);
-    result.setDate(result.getDate() + days);
-    return result;
-}
-
-/*
-sleep(2000).then(() => {
-  // Do something after the sleep!
-
-  
-});
-*/
-
-function sleep (time) {
-  return new Promise((resolve) => setTimeout(resolve, time));
-}
-
-function isEmptyObject( obj ) {
-  for ( var name in obj ) {
-      return false;
-  }
-  return true;
-}
-
-function convertUTCDateToLocalDate(date) {
-  var newDate = new Date(date);
-  newDate.setMinutes(date.getMinutes() + date.getTimezoneOffset());
-  return newDate;
-}
-
-function addZeroBefore(n) {
-    return (n < 10 ? '0' : '') + n;
-}
-
-var convertBase = function () {
-
-    function convertBase(baseFrom, baseTo) {
-        return function (num) {
-            return parseInt(num, baseFrom).toString(baseTo);
-  
-        };
-    }
-  
-    // binary to decimal
-    convertBase.bin2dec = convertBase(2, 10);
-  
-    // binary to hexadecimal
-    convertBase.bin2hex = convertBase(2, 16);
-  
-    // decimal to binary
-    convertBase.dec2bin = convertBase(10, 2);
-  
-    // decimal to hexadecimal
-    convertBase.dec2hex = convertBase(10, 16);
-  
-    // hexadecimal to binary
-    convertBase.hex2bin = convertBase(16, 2);
-  
-    // hexadecimal to decimal
-    convertBase.hex2dec = convertBase(16, 10);
-  
-    return convertBase;
-  }();
-
-module.exports = {
-    bytesToInt,
-    longToByteArray,
-    addDays,
-    addZeroBefore,
-    resizeArray,
-    isEmptyObject,
-    sleep,
-    convertUTCDateToLocalDate
-}
\ No newline at end of file
+function bytesToInt(bytes, numberOfBytes) {
+    let buffer = [];
+    if (Array.isArray(bytes)) {
+        buffer = bytes.slice(0);
+        if (numberOfBytes != undefined) {
+            buffer = bytes.slice(bytes.length - numberOfBytes);
+        }
+    }
+    else buffer.push(bytes);
+
+    let result = 0;
+    for (let i = 0; i < buffer.length; i++) {
+        result = (result << 8) | buffer[i];
+    }
+
+    return result >>> 0; //ensure it's an unsigned 32-bit number
+}
+
+function resizeArray(arr, newSize, defaultValue) {
+    while (newSize > arr.length)
+        arr.push(defaultValue);
+    arr.length = newSize;
+}
+
+longToByteArray = function(/*long*/long) {
+    // we want to represent the input as a 8-bytes array
+    var byteArray = [0, 0, 0, 0, 0, 0, 0, 0];
+
+    for (var index = 0; index < byteArray.length; index++) {
+        var byte = long & 0xff;
+        byteArray[index] = byte;
+        long = (long - byte) / 256;
+    }
+
+    return byteArray;
+};
+
+function addDays(date, days) {
+    var result = new Date(date);
+    result.setDate(result.getDate() + days);
+    return result;
+}
+
+/*
+sleep(2000).then(() => {
+  // Do something after the sleep!
+
+  
+});
+*/
+
+function sleep(time) {
+    return new Promise((resolve) => setTimeout(resolve, time));
+}
+
+function isEmptyObject(obj) {
+    for (var name in obj) {
+        return false;
+    }
+    return true;
+}
+
+function convertUTCDateToLocalDate(date) {
+    var newDate = new Date(date);
+    newDate.setMinutes(date.getMinutes() + date.getTimezoneOffset());
+    return newDate;
+}
+
+function addZeroBefore(n) {
+    return (n < 10 ? '0' : '') + n;
+}
+
+var convertBase = function() {
+
+    function convertBase(baseFrom, baseTo) {
+        return function(num) {
+            return parseInt(num, baseFrom).toString(baseTo);
+
+        };
+    }
+
+    // binary to decimal
+    convertBase.bin2dec = convertBase(2, 10);
+
+    // binary to hexadecimal
+    convertBase.bin2hex = convertBase(2, 16);
+
+    // decimal to binary
+    convertBase.dec2bin = convertBase(10, 2);
+
+    // decimal to hexadecimal
+    convertBase.dec2hex = convertBase(10, 16);
+
+    // hexadecimal to binary
+    convertBase.hex2bin = convertBase(16, 2);
+
+    // hexadecimal to decimal
+    convertBase.hex2dec = convertBase(16, 10);
+
+    return convertBase;
+}();
+
+module.exports = {
+    bytesToInt,
+    longToByteArray,
+    addDays,
+    addZeroBefore,
+    resizeArray,
+    isEmptyObject,
+    sleep,
+    convertUTCDateToLocalDate
+}