diff --git a/README.md b/README.md
index d3a3d3f..a95b8f6 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ $ npm install mmon -g
 $ mmon
 ```
 
-Press `q` (quit) or `CTRL-C` to exit mmon.
+Press `q` (quit) or `CTRL-c` to exit mmon.
 
 ## Features
 
@@ -53,6 +53,7 @@ mmon -i 5
 
 | Version        | Date           | Comment  |
 | -------------- | -------------- | -------- |
+| 1.0.4          | 2016-08-23     | tiny fixes (merge, use strict) |
 | 1.0.3          | 2016-08-19     | tiny improvement, updated copyright notes |
 | 1.0.2          | 2016-08-19     | tiny fixes |
 | 1.0.1          | 2016-08-19     | documentation update, colors |
diff --git a/index.js b/index.js
index 166f2b4..cfe9dad 100644
--- a/index.js
+++ b/index.js
@@ -260,7 +260,7 @@ function displayAll(first) {
 
   lines[0] = lines[0] + cols.log('MISC:                                                                                               ', 'white', 'darkgray');
   lines[1] = lines[1] + 'Internet Latency : ' + (dynamicData.inetLatency >= 0 ? draw.fmtNum(dynamicData.inetLatency, 2, 8, 2000, 5000) + ' ms' : ' -              ');
-  lines[2] = lines[2] + 'Battery Level    :   ' + (dynamicData.battery.hasbattery ? draw.fmtNum(dynamicData.battery.percent, 1, 5) + '%' + (dynamicData.battery.ischarging ? ' !!' : '   ') : ' ---- ');
+  lines[2] = lines[2] + 'Battery Level    :   ' + (dynamicData.battery.hasbattery ? draw.fmtNum(dynamicData.battery.percent, 1, 5) + '%' + (dynamicData.battery.ischarging ? cols.log(' ++','green') : '   ') : ' ---- ');
 
   console.log();
   lines.forEach(line => {
diff --git a/lib/args.js b/lib/args.js
index 5563bec..d9cfc8e 100644
--- a/lib/args.js
+++ b/lib/args.js
@@ -1,4 +1,5 @@
 'use strict';
+
 // ==================================================================================
 // args.js
 // ----------------------------------------------------------------------------------
@@ -21,10 +22,10 @@ function getArgs() {
 	  return !isNaN(parseFloat(n)) && isFinite(n);
 	}
 
-	var args = process.argv.slice(2);
+	let args = process.argv.slice(2);
 
-	var result = {};
-	var current = 0;
+	let result = {};
+	let current = 0;
 	args.forEach(function (val, index) {
 		if (index == current) {
 			current = index + 1;
diff --git a/lib/cols.js b/lib/cols.js
index 2259d5f..a831dfb 100644
--- a/lib/cols.js
+++ b/lib/cols.js
@@ -1,17 +1,29 @@
 'use strict';
 
-// inspired by: https://github.com/jbnicolai/ansi-256-colors
+// ==================================================================================
+// draw.js
+// ----------------------------------------------------------------------------------
+// Description:   tiny CLI draw library
+//                for Node.js
+// Copyright:     (c) 2016
+// Author:        Sebastian Hildebrandt
+// ----------------------------------------------------------------------------------
+// inspired by:   https://github.com/jbnicolai/ansi-256-colors
+// Contributors:  -
+// ----------------------------------------------------------------------------------
+// License:       MIT
+// ==================================================================================
 
-var fgcodes = Array.apply(null, new Array(256)).map(function (_, i) { return '\x1b[38;5;' + i + 'm'; });
-var fg_rgb = fgcodes.slice(16, 232);
-var fg_gray = fgcodes.slice(232, 256);
+let fgcodes = Array.apply(null, new Array(256)).map(function (_, i) { return '\x1b[38;5;' + i + 'm'; });
+let fg_rgb = fgcodes.slice(16, 232);
+let fg_gray = fgcodes.slice(232, 256);
 
-var bgcodes = Array.apply(null, new Array(256)).map(function (_, i) { return '\x1b[48;5;' + i + 'm'; });
-var bg_rgb = bgcodes.slice(16, 232);
-var bg_gray = bgcodes.slice(232, 256);
-var reset_str = '\x1b[0m';
+let bgcodes = Array.apply(null, new Array(256)).map(function (_, i) { return '\x1b[48;5;' + i + 'm'; });
+let bg_rgb = bgcodes.slice(16, 232);
+let bg_gray = bgcodes.slice(232, 256);
+let reset_str = '\x1b[0m';
 
-var colors = {
+let colors = {
 	black: 0,
 	red: 1,
 	green: 41,
diff --git a/lib/draw.js b/lib/draw.js
index ae0cd45..65987e9 100644
--- a/lib/draw.js
+++ b/lib/draw.js
@@ -1,4 +1,5 @@
 'use strict';
+
 // ==================================================================================
 // draw.js
 // ----------------------------------------------------------------------------------
diff --git a/lib/libObj.js b/lib/libObj.js
index 5f9d974..0c04666 100644
--- a/lib/libObj.js
+++ b/lib/libObj.js
@@ -1,11 +1,13 @@
+'use strict';
+
 function merge(obj1, obj2) {
 
-  for (var p in obj2) {
+  for (let p in obj2) {
     if (obj2.hasOwnProperty(p)) {
       try {
         // Property in destination object set; update its value.
         if ( obj2[p].constructor==Object ) {
-          obj1[p] = MergeRecursive(obj1[p], obj2[p]);
+          obj1[p] = merge(obj1[p], obj2[p]);
         } else {
           obj1[p] = obj2[p];
         }
diff --git a/lib/libTime.js b/lib/libTime.js
index d66bf08..5ab96bc 100644
--- a/lib/libTime.js
+++ b/lib/libTime.js
@@ -1,3 +1,5 @@
+'use strict';
+
 function getTimeAgo(val) {
   let diff = new Date().getTime() - new Date(val).getTime();