diff --git a/deploy/releve-cellules/lancer.sh b/deploy/releve-cellules/lancer.sh
new file mode 100755
index 0000000..e55f07c
--- /dev/null
+++ b/deploy/releve-cellules/lancer.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+# Lance et surveille le releve continu des cellules Pylontech.
+#
+# Appele par une entree @reboot de la crontab utilisateur. On ne passe PAS par
+# `systemctl --user` : sans « linger », aucun gestionnaire de services
+# utilisateur ne tourne au demarrage, et la commande echouerait faute de
+# XDG_RUNTIME_DIR. Le choix a ete fait de ne pas activer le linger, qui aurait
+# aussi fait demarrer une douzaine de services graphiques sans session ouverte.
+#
+# Ce script fait donc lui-meme le travail d'un superviseur : garde
+# anti-doublon, redemarrage apres echec, journal borne.
+
+DEPOT=/mnt/projects/EVCS/EVCS
+PORT=/dev/ttyUSB0
+JOURNAL="$HOME/.local/state/releve-cellules.log"
+MODULES=1,2,3,4
+PAS=600
+
+mkdir -p "$(dirname "$JOURNAL")"
+
+# Garde anti-doublon : deux processus sur le meme port serie entrelacent leurs
+# lectures et produisent des relevés faux, sans que rien ne le signale.
+if pgrep -f "pylontech-console.mjs --port $PORT" >/dev/null; then
+  echo "$(date '+%F %T') deja en cours, on ne relance pas" >> "$JOURNAL"
+  exit 0
+fi
+
+cd "$DEPOT" || { echo "$(date '+%F %T') depot introuvable" >> "$JOURNAL"; exit 1; }
+
+while true; do
+  # Le journal est tronque au-dela de 5 Mo : une semaine sans surveillance ne
+  # doit pas remplir la partition.
+  [ -f "$JOURNAL" ] && [ "$(stat -c%s "$JOURNAL")" -gt 5242880 ] && : > "$JOURNAL"
+
+  if [ ! -e "$PORT" ]; then
+    echo "$(date '+%F %T') $PORT absent, nouvelle tentative dans 60 s" >> "$JOURNAL"
+    sleep 60
+    continue
+  fi
+
+  echo "$(date '+%F %T') demarrage du releve" >> "$JOURNAL"
+  /usr/bin/node tools/pylontech-console.mjs \
+    --port "$PORT" --suivi "$PAS" --modules "$MODULES" >> "$JOURNAL" 2>&1
+
+  echo "$(date '+%F %T') arret (code $?), reprise dans 60 s" >> "$JOURNAL"
+  sleep 60
+done
diff --git a/docs/mesures/batteries/202609052031-suivi.csv b/docs/mesures/batteries/202609052031-suivi.csv
new file mode 100644
index 0000000..16c213b
--- /dev/null
+++ b/docs/mesures/batteries/202609052031-suivi.csv
@@ -0,0 +1,5 @@
+heure_reelle,etat,courant_mA,c1_mV,c2_mV,c3_mV,c4_mV,c5_mV,c6_mV,c7_mV,c8_mV,c9_mV,c10_mV,c11_mV,c12_mV,c13_mV,c14_mV,c15_mV,ecart_mV
+2026-09-05T18:31:45.233Z,Y230202C30371426,,3290,3291,3292,3292,3292,3290,3291,3292,3292,3291,3290,3291,3292,3292,3292,2
+2026-09-05T18:31:45.388Z,Y230202C30371425,,3291,3292,3291,3292,3290,3290,3292,3292,3292,3290,3290,3292,3292,3292,3290,2
+2026-09-05T18:31:45.633Z,Y230202C30371431,,3290,3292,3292,3292,3291,3289,3292,3292,3292,3291,3290,3292,3292,3292,3291,3
+2026-09-05T18:31:45.788Z,Y230202C30371427,,3289,3291,3291,3291,3291,3289,3291,3291,3291,3291,3289,3291,3292,3292,3291,3
diff --git a/docs/mesures/batteries/202609052040-suivi.csv b/docs/mesures/batteries/202609052040-suivi.csv
new file mode 100644
index 0000000..a8d3e17
--- /dev/null
+++ b/docs/mesures/batteries/202609052040-suivi.csv
@@ -0,0 +1,5 @@
+heure_reelle,etat,courant_mA,c1_mV,c2_mV,c3_mV,c4_mV,c5_mV,c6_mV,c7_mV,c8_mV,c9_mV,c10_mV,c11_mV,c12_mV,c13_mV,c14_mV,c15_mV,ecart_mV
+2026-09-05T18:40:18.873Z,Y230202C30371426,,3304,3304,3304,3304,3303,3303,3304,3303,3304,3303,3304,3303,3304,3304,3303,1
+2026-09-05T18:40:19.033Z,Y230202C30371425,,3303,3303,3303,3304,3304,3303,3303,3303,3303,3303,3303,3303,3303,3303,3303,1
+2026-09-05T18:40:19.191Z,Y230202C30371431,,3303,3303,3304,3303,3303,3303,3303,3303,3303,3303,3303,3304,3303,3304,3303,1
+2026-09-05T18:40:19.348Z,Y230202C30371427,,3303,3303,3303,3303,3303,3303,3303,3303,3303,3303,3303,3303,3303,3303,3303,0