diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9fa2a0c..f2f2eec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -77,6 +77,7 @@ For major (breaking) changes - **version 4, 3 and 2** - see end of page.
 
 | Version        | Date           | Comment  |
 | -------------- | -------------- | -------- |
+| 5.8.1          | 2021-08-24     | `battery()` fix capacity |
 | 5.8.0          | 2021-08-02     | `disksIO()` added waitTime, waitPercent (linux) |
 | 5.7.14         | 2021-08-01     | `cpu()` cache calculation fix (linux) |
 | 5.7.13         | 2021-07-28     | `osInfo()` fix uefi detection (win) |
diff --git a/docs/history.html b/docs/history.html
index 89e715e..41e4fb5 100644
--- a/docs/history.html
+++ b/docs/history.html
@@ -56,6 +56,11 @@
                   </tr>
                 </thead>
                 <tbody>
+                  <tr>
+                    <th scope="row">5.8.1</th>
+                    <td>2021-08-24</td>
+                    <td><span class="code">battery()</span> battery fix capacity</td>
+                  </tr>
                   <tr>
                     <th scope="row">5.8.0</th>
                     <td>2021-08-02</td>
diff --git a/docs/index.html b/docs/index.html
index e2c8945..2d92b89 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -170,7 +170,7 @@
       <img class="logo" src="assets/logo.png">
       <div class="title">systeminformation</div>
       <div class="subtitle"><span id="typed"></span>&nbsp;</div>
-      <div class="version">New Version: <span id="version">5.8.0</span></div>
+      <div class="version">New Version: <span id="version">5.8.1</span></div>
       <button class="btn btn-light" onclick="location.href='https://github.com/sebhildebrandt/systeminformation'">View on Github <i class=" fab fa-github"></i></button>
     </div>
     <div class="down">
@@ -203,7 +203,7 @@
     </div>
     <div class="row number-section">
       <div class="col-xl-4 col-lg-4 col-md-4 col-12">
-        <div class="numbers">14,481</div>
+        <div class="numbers">14,535</div>
         <div class="title">Lines of code</div>
       </div>
       <div class="col-xl-4 col-lg-4 col-md-4 col-12">
@@ -211,7 +211,7 @@
         <div class="title">Downloads last month</div>
       </div>
       <div class="col-xl-4 col-lg-4 col-md-4 col-12">
-        <div class="numbers">449</div>
+        <div class="numbers">465</div>
         <div class="title">Dependents</div>
       </div>
     </div>
diff --git a/lib/system.js b/lib/system.js
index 3e39c98..a298856 100644
--- a/lib/system.js
+++ b/lib/system.js
@@ -738,7 +738,7 @@ function chassis(callback) {
     'Blade',
     'Blade Enclosure',
     'Tablet',
-    'Concertible',
+    'Convertible',
     'Detachable',
     'IoT Gateway ',
     'Embedded PC',
diff --git a/package.json b/package.json
index 3c1fb63..6eaf300 100644
--- a/package.json
+++ b/package.json
@@ -69,7 +69,8 @@
     "wifinetworks",
     "virtual box",
     "virtualbox",
-    "vm"
+    "vm",
+    "backend"
   ],
   "repository": {
     "type": "git",