diff --git a/apps/predbat/predbat.py b/apps/predbat/predbat.py
index bc90f502..cc2e7de1 100644
--- a/apps/predbat/predbat.py
+++ b/apps/predbat/predbat.py
@@ -6516,11 +6516,24 @@ def optimise_charge_limit(
         # Add margin last
         best_soc = min(best_soc + self.best_soc_margin, self.soc_max)
 
-        self.log(
-            "Try optimising charge window(s) {} price {} results {} selected {} was {}".format(
-                all_n if all_n else window_n, charge_window[window_n]["average"], window_results, best_soc, charge_limit[window_n]
+        if not all_n:
+            self.log(
+                "Try optimising charge window(s)    {}: {} - {} price {} selected {} was {} results {}".format(
+                    window_n,
+                    self.time_abs_str(window["start"]),
+                    self.time_abs_str(window["end"]),
+                    charge_window[window_n]["average"],
+                    best_soc,
+                    charge_limit[window_n],
+                    window_results,
+                )
+            )
+        else:
+            self.log(
+                "Try optimising charge window(s)    {}: price {} selected {} was {} results {}".format(
+                    all_n, charge_window[window_n]["average"], best_soc, charge_limit[window_n], window_results
+                )
             )
-        )
         return best_soc, best_metric, best_cost, best_soc_min, best_soc_min_minute, best_keep
 
     def optimise_discharge(
@@ -6679,10 +6692,22 @@ def optimise_discharge(
                     best_size = window_size
                     best_keep = metric_keep
 
-        optimized = all_n
-        if not optimized:
-            optimized = window_n
-        self.log("Try optimising discharge window(s) {} price {} gives {} => selected {}% size {}".format(optimized, window["average"], window_results, best_discharge, best_size))
+        if not all_n:
+            self.log(
+                "Try optimising discharge window(s) {}: {} - {} price {} selected {}% size {} was {}% results {}".format(
+                    window_n,
+                    self.time_abs_str(window["start"]),
+                    self.time_abs_str(window["end"]),
+                    window["average"],
+                    best_discharge,
+                    best_size,
+                    discharge_limit[window_n],
+                    window_results,
+                )
+            )
+        else:
+            self.log("Try optimising discharge window(s) {} price {} selected {}% size {} results {}".format(all_n, window["average"], best_discharge, best_size, window_results))
+
         return best_discharge, best_start, best_metric, best_cost, best_soc_min, best_soc_min_minute, best_keep
 
     def window_sort_func(self, window):