diff --git a/check-ups-runtime.sh b/check-ups-runtime.sh
new file mode 100644
index 0000000..b8148bb
--- /dev/null
+++ b/check-ups-runtime.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+WEBHOOK="https://discord.com/api/webhooks/1234567890987654321/jsdkghfojahjgoaropihjgoirhjfsdighajsdfnbgkvjasznbfgousoghsoaghoasdhgjnsdfjnv;jsdfnvjfsdgnd"
+LOGFILE="/var/log/ups-shutdown.log"
+STATEFILE="/tmp/ups-runtime-alert.sent"
+
+UPS_DATA=$(upsc eaton@localhost 2>/dev/null)
+STATUS=$(echo "$UPS_DATA" | awk -F': ' '/^ups.status:/ {print $2}')
+RUNTIME=$(echo "$UPS_DATA" | awk -F': ' '/^battery.runtime:/ {print $2}')
+BATTERY_CHARGE=$(echo "$UPS_DATA" | awk -F': ' '/^battery.charge:/ {print $2}')
+MODEL=$(echo "$UPS_DATA" | awk -F': ' '/^device.model:/ {print $2}')
+
+# Si autonomie < 300 sec et que message pas encore envoyé
+if [[ "$RUNTIME" -lt 300 ]]; then
+  if [[ ! -f "$STATEFILE" ]]; then
+    MESSAGE="⏱ *$(hostname)* — ⚠️ Autonomie critique UPS à $(date '+%F %T')\n🔋 Batterie : ${BATTERY_CHARGE} %\n⏳ Autonomie : ${RUNTIME} sec\n🖥️ Modèle : ${MODEL}"
+    echo "$(date '+%F %T') 🚨 ALERTE: autonomie < 300 sec (batt=$BATTERY_CHARGE%, runtime=$RUNTIME sec)" >> "$LOGFILE"
+    jq -n --arg content "$MESSAGE" '{content: $content}' | \
+      curl -s -H "Content-Type: application/json" -X POST -d @- "$WEBHOOK" > /dev/null
+    touch "$STATEFILE"
+  fi
+else
+  # Si autonomie > 300 sec, reset le flag d’alerte
+  [[ -f "$STATEFILE" ]] && rm -f "$STATEFILE"
+fi