diff --git a/configuration.nix b/configuration.nix
index 9d19b18..0ce75a6 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -93,6 +93,12 @@
     dates = "14:00";
   };
 
+  # Suspend to RAM/disk when battery is critical
+  services.upower = {
+    enable = true;
+    percentageCritical = 5;
+  };
+
   # Import other configuration modules
   imports = [
     ./modules/software.nix