diff --git a/CHANGELOG.md b/CHANGELOG.md
index b5399b76..ad357fe8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@ This file is used to list changes made in each version of the apt cookbook.
 
 ## Unreleased
 
+- Added attribute to control OnlyOnACPower unattended upgrades setting.
+
 ## 7.5.22 - *2024-05-02*
 
 ## 7.5.21 - *2024-05-02*
diff --git a/README.md b/README.md
index f30360c5..6311f82e 100644
--- a/README.md
+++ b/README.md
@@ -145,6 +145,7 @@ To pull just security updates, set `origins_patterns` to something like `["origi
 - `['apt']['unattended_upgrades']['random_sleep']` - Wait a random number of seconds up to this value before running daily periodic apt actions. System default is 1800 seconds (30 minutes).
 - `['apt']['unattended_upgrades']['syslog_enable']` - Enable logging to syslog. Defaults to false.
 - `['apt']['unattended_upgrades']['syslog_facility']` - Specify syslog facility. Defaults to 'daemon'.
+- `['apt']['unattended_upgrades']['only_on_ac_power']` - Download and install upgrades only on AC power. Default is true.
 - `['apt']['unattended_upgrades']['dpkg_options']` An array of dpkg options to be used specifically only for unattended upgrades. Defaults to `[]` which will prevent it from being rendered from the template in the resulting file.
 
 ### Configuration for APT
diff --git a/attributes/default.rb b/attributes/default.rb
index 102f4e51..6bdaddd4 100644
--- a/attributes/default.rb
+++ b/attributes/default.rb
@@ -50,6 +50,7 @@
 default['apt']['unattended_upgrades']['random_sleep'] = nil
 default['apt']['unattended_upgrades']['syslog_enable'] = false
 default['apt']['unattended_upgrades']['syslog_facility'] = 'daemon'
+default['apt']['unattended_upgrades']['only_on_ac_power'] = true
 
 default['apt']['unattended_upgrades']['dpkg_options'] = []
 
diff --git a/templates/50unattended-upgrades.erb b/templates/50unattended-upgrades.erb
index a183e63c..537c2a24 100644
--- a/templates/50unattended-upgrades.erb
+++ b/templates/50unattended-upgrades.erb
@@ -118,7 +118,7 @@ Dpkg::Options {
 
 // Download and install upgrades only on AC power
 // (i.e. skip or gracefully stop updates on battery)
-// Unattended-Upgrade::OnlyOnACPower "true";
+Unattended-Upgrade::OnlyOnACPower "<%= node['apt']['unattended_upgrades']['only_on_ac_power'] ? 'true' : 'false' %>";
 
 // Download and install upgrades only on non-metered connection
 // (i.e. skip or gracefully stop updates on a metered connection)