diff --git a/hosts/callisto/configuration.nix b/hosts/callisto/configuration.nix
index 2708f7b..365c769 100755
--- a/hosts/callisto/configuration.nix
+++ b/hosts/callisto/configuration.nix
@@ -115,7 +115,7 @@
 
   services.udev.extraRules = ''
     KERNEL=="cpu_dma_latency", GROUP="realtime"
-    KERNEL=="macsmc-battery", SUBSYSTEM=="power_supply", ATTR{charge_control_end_threshold}="90", ATTR{charge_control_start_threshold}="80"
+    KERNEL=="macsmc-battery", SUBSYSTEM=="power_supply", ATTR{charge_control_end_threshold}="90", ATTR{charge_control_start_threshold}="85"
   '';
 
   # Allow unfree packages