diff --git a/data/igate_conf.json b/data/igate_conf.json
index 7afec30..e1c8243 100644
--- a/data/igate_conf.json
+++ b/data/igate_conf.json
@@ -52,7 +52,9 @@
         "sendExternalVoltage": false,
         "externalVoltagePin": 34,
         "monitorExternalVoltage": false,
-        "externalSleepVoltage": 10.9
+        "externalSleepVoltage": 10.9,
+        "voltageDividerR1": 100.0,
+        "voltageDividerR2": 27.0
 	},
     "bme": {
         "active": false,
diff --git a/data_embed/index.html b/data_embed/index.html
index ae275b4..c84ecd6 100644
--- a/data_embed/index.html
+++ b/data_embed/index.html
@@ -940,7 +940,13 @@
                                     </svg>
                                     Battery
                                 </h5>
-                                <small>Battery Monitor & Health</small>
+                                <small>Battery Monitor & Health 
+                                    <br>
+                                    <br>
+                                    Max Voltage on input pin is 3.3V.
+                                    <br>
+                                    Calculate voltage divider accordingly.
+                                </small>
                             </div>
                             <div class="col-9 mt-2">
                                 <div class="row mt-2">
diff --git a/src/configuration.cpp b/src/configuration.cpp
index e2b3131..95a4bf1 100644
--- a/src/configuration.cpp
+++ b/src/configuration.cpp
@@ -73,6 +73,8 @@ void Configuration::writeFile() {
     data["battery"]["externalVoltagePin"]       = battery.externalVoltagePin;
     data["battery"]["monitorExternalVoltage"]   = battery.monitorExternalVoltage;
     data["battery"]["externalSleepVoltage"]     = battery.externalSleepVoltage;
+    data["battery"]["voltageDividerR1"]         = battery.voltageDividerR1;
+    data["battery"]["voltageDividerR2"]         = battery.voltageDividerR2;
 
     data["bme"]["active"]                   = bme.active;
     data["bme"]["heightCorrection"]         = bme.heightCorrection;
@@ -144,6 +146,8 @@ bool Configuration::readFile() {
         battery.externalVoltagePin      = data["battery"]["externalVoltagePin"].as<int>();
         battery.monitorExternalVoltage  = data["battery"]["monitorExternalVoltage"].as<bool>();
         battery.externalSleepVoltage    = data["battery"]["externalSleepVoltage"].as<float>();
+        battery.voltageDividerR1        = data["battery"]["voltageDividerR1"].as<float>();
+        battery.voltageDividerR2        = data["battery"]["voltageDividerR2"].as<float>();
 
         aprs_is.passcode                = data["aprs_is"]["passcode"].as<String>();
         aprs_is.server                  = data["aprs_is"]["server"].as<String>();
@@ -345,6 +349,8 @@ void Configuration::init() {
     battery.externalVoltagePin      = 34;
     battery.monitorExternalVoltage  = false;
     battery.externalSleepVoltage    = 3.0;
+    battery.voltageDividerR1        = 100.0;
+    battery.voltageDividerR2        = 27.0;
 
     lowPowerMode                = false;
     lowVoltageCutOff            = 0;
diff --git a/src/configuration.h b/src/configuration.h
index 8045bd0..dde2794 100644
--- a/src/configuration.h
+++ b/src/configuration.h
@@ -75,6 +75,8 @@ public:
     int     externalVoltagePin;
     bool    monitorExternalVoltage;
     float   externalSleepVoltage;
+    float   voltageDividerR1;
+    float   voltageDividerR2;
 };
 
 class BME {