diff --git a/power-supply/power_supply.cpp b/power-supply/power_supply.cpp
index 00e3b8c..50d647a 100644
--- a/power-supply/power_supply.cpp
+++ b/power-supply/power_supply.cpp
@@ -61,6 +61,7 @@
 constexpr auto PART_NUMBER = "part_number";
 constexpr auto FW_VERSION = "fw_version";
 constexpr auto CCIN = "ccin";
+constexpr auto INPUT_HISTORY = "input_history";
 
 PowerSupply::PowerSupply(const std::string& name, size_t inst,
                          const std::string& objpath,
@@ -157,6 +158,8 @@
                 checkCurrentOutOverCurrentFault(statusWord);
                 checkPGOrUnitOffFault(statusWord);
             }
+
+            updateHistory();
         }
     }
     catch (ReadFailure& e)
@@ -768,6 +771,29 @@
     maximum = std::make_unique<history::Maximum>(bus, maxPath);
 }
 
+void PowerSupply::updateHistory()
+{
+    if (!recordManager)
+    {
+        //Not enabled
+        return;
+    }
+
+    //Read just the most recent average/max record
+    auto data = pmbusIntf.readBinary(
+            INPUT_HISTORY,
+            pmbus::Type::HwmonDeviceDebug,
+            history::RecordManager::RAW_RECORD_SIZE);
+
+    //Update D-Bus only if something changed (a new record ID, or cleared out)
+    auto changed = recordManager->add(data);
+    if (changed)
+    {
+        average->values(std::move(recordManager->getAverageRecords()));
+        maximum->values(std::move(recordManager->getMaximumRecords()));
+    }
+}
+
 }
 }
 }
diff --git a/power-supply/power_supply.hpp b/power-supply/power_supply.hpp
index f17be38..5eb96a9 100644
--- a/power-supply/power_supply.hpp
+++ b/power-supply/power_supply.hpp
@@ -388,6 +388,20 @@
          */
         void updateInventory();
 
+        /**
+         * @brief Reads the most recent input history record from the power
+         *        supply and updates the average and maximum properties in
+         *        D-Bus if there is a new reading available.
+         *
+         * This will still run every time analyze() is called so code can
+         * post new data as soon as possible and the timestamp will more
+         * accurately reflect the correct time.
+         *
+         * D-Bus is only updated if there is a change and the oldest record
+         * will be pruned if the property already contains the max number of
+         * records.
+         */
+        void updateHistory();
 };
 
 }