diff --git a/www/docs/devicechart.t b/www/docs/devicechart.t
index c32b6e4580..0ef8a3c79a 100644
--- a/www/docs/devicechart.t
+++ b/www/docs/devicechart.t
@@ -161,12 +161,12 @@
     <td>LiIon (Custom)</td>
 </tr>
 <tr><th><b>Charger spec</b></th>
-    <td>9-12V 600mA</td>
-    <td>9-12V 600mA</td>
-    <td>9-12V 600mA</td>
-    <td>9-12V 600mA</td>
-    <td>6V 700mA</td>
-    <td>6V 700mA</td>
+    <td>9-12V 600mA center&nbsp;+</td>
+    <td>9-12V 600mA center&nbsp;+</td>
+    <td>9-12V 600mA center&nbsp;+</td>
+    <td>9-12V 600mA center&nbsp;+</td>
+    <td>6V 700mA center&nbsp;+</td>
+    <td>6V 700mA center&nbsp;+</td>
 </tr>
 <tr><th><b>Dimensions</b></th>
     <td>115x83x34 mm (4.5"x3.2"x1.3")</td>