diff --git a/docs/index.md b/docs/index.md
index 74762f8..05352c2 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -36,6 +36,7 @@ The Helios4 is an open source and open hardware project, therefore our objective
 |Boot Mode Selector|- SPI<br>- SD Card<br>- UART<br>- SATA|
 |SPI NOR Flash|32Mbit onboard|
 |PWM FAN|2|
+|RTC Battery|1|
 |DC input|12V / 8A|
 
 |**Mechanical Specifications**||
diff --git a/mkdocs.yml b/mkdocs.yml
index 7123432..7b208bf 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -51,11 +51,9 @@ google_analytics:
 # Extensions
 markdown_extensions:
   - admonition
-  - codehilite:
-      guess_lang: false
-  - toc:
-      permalink: true
-#  - lightgallery
+  - codehilite(guess_lang=false)
+  - toc(permalink=true)
+  - lightgallery
 
 # Page naming
 pages: