diff --git a/CHANGELOG.md b/CHANGELOG.md
index 414f999..9ae5c3a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -100,6 +100,7 @@ Other changes
 
 | Version        | Date           | Comment  |
 | -------------- | -------------- | -------- |
+| 3.38.0         | 2018-04-06     | added `battery().acconnected` |
 | 3.37.12        | 2018-04-05     | another optimization `battery().ischarging` for macOS |
 | 3.37.11        | 2018-04-05     | another optimization `battery().ischarging` for macOS |
 | 3.37.10        | 2018-04-05     | `battery().ischarging` optimized for macOS |
diff --git a/README.md b/README.md
index 6973848..4986110 100644
--- a/README.md
+++ b/README.md
@@ -53,13 +53,13 @@ async function cpu() {
 ### Latest Activity
 
 (last 7 major and minor version releases)
+- Version 3.38.0: added `battery.acconnected`
 - Version 3.37.0: extended FreeBSD support `networkStats()`
 - Version 3.36.0: extended FreeBSD support `networkConnections()`
 - Version 3.35.0: extended FreeBSD support `processLoad()`
 - Version 3.34.0: first partial FreeBSD support
 - Version 3.33.0: added bios `bios()` and main board `baseboard()` information
 - Version 3.32.0: extended `memLayout()` - added manufacturer
-- Version 3.31.0: extended windows support `cpuFlags()` (partially)
 - ...
 
 You can find all changes here: [detailed changelog][changelog-url]
@@ -196,6 +196,7 @@ I also created a nice little command line tool called [mmon][mmon-github-url]  (
 | | maxcapacity | X |  | X | X | max capacity of battery |
 | | currentcapacity | X |  | X | X | current capacity of battery |
 | | percent | X | X | X | X | charging level in percent |
+| | acconnected | X | X | X | X | AC connected |
 | si.graphics(cb) | {...} | X |  | X | X | arrays of graphics controllers and displays |
 | | controllers[]| X |  | X | X | graphics controllers array |
 | | ...[0].model | X |  | X | X | graphics controller model |
diff --git a/lib/battery.js b/lib/battery.js
index 0d245a8..66049c3 100644
--- a/lib/battery.js
+++ b/lib/battery.js
@@ -38,7 +38,8 @@ module.exports = function (callback) {
         ischarging: false,
         maxcapacity: 0,
         currentcapacity: 0,
-        percent: 0
+        percent: 0,
+        acconnected: true
       };
 
       if (_linux) {
@@ -53,6 +54,7 @@ module.exports = function (callback) {
             if (!error) {
               let lines = stdout.toString().split('\n');
               if (lines.length > 0 && lines[0]) result.ischarging = (lines[0].trim().toLowerCase() === 'charging');
+              result.acconnected = result.ischarging;
             }
             exec('cat ' + battery_path + 'cyclec_ount', function (error, stdout) {
               if (!error) {
@@ -92,6 +94,7 @@ module.exports = function (callback) {
           result.hasbattery = (batteries > 0);
           result.cyclecount = -1;
           result.ischarging = util.getValue(lines, 'hw.acpi.acline') !== '1';
+          result.acconnected = result.ischarging;
           result.maxcapacity = -1;
           result.currentcapacity = -1;
           result.percent = batteries ? percent : -1;
@@ -117,9 +120,11 @@ module.exports = function (callback) {
               }
             }
             if (parts && parts[1]) {
-              result.ischarging = !(parts[1].trim() === 'charged' || parts[1].trim() === 'discharging');
+              result.ischarging = (parts[1].trim() === 'charging');
+              result.acconnected = (parts[1].trim() !== 'discharging');
             } else {
               result.ischarging = util.getValue(lines, 'ischarging', '=').toLowerCase() === 'yes';
+              result.acconnected = result.ischarging;
             }
             if (result.maxcapacity && result.currentcapacity) {
               result.hasbattery = true;
@@ -142,6 +147,7 @@ module.exports = function (callback) {
               result.percent = parseInt(util.getValue(lines, 'EstimatedChargeRemaining', '=') || 0);
               result.currentcapacity = parseInt(result.maxcapacity * result.percent / 100);
               result.ischarging = (status >= 6 && status <= 9) || (!(status === 3) && !(status === 1) && result.percent < 100);
+              result.acconnected = result.ischarging;
             }
           }
           if (callback) { callback(result); }