diff --git a/meshtastic/config.options b/meshtastic/config.options
index 515158a..3448af5 100644
--- a/meshtastic/config.options
+++ b/meshtastic/config.options
@@ -10,3 +10,5 @@
 *LoRaConfig.bandwidth int_size:16
 *LoRaConfig.coding_rate int_size:8
 *LoRaConfig.channel_num int_size:16
+
+*PowerConfig.device_battery_ina_address int_size:8
\ No newline at end of file
diff --git a/meshtastic/config.proto b/meshtastic/config.proto
index 32d8322..7025a7b 100644
--- a/meshtastic/config.proto
+++ b/meshtastic/config.proto
@@ -336,6 +336,11 @@ message Config {
      * 0 for default of 10 seconds
      */
     uint32 min_wake_secs = 8;
+
+    /*
+     * I2C address of INA_2XX to use for reading device battery voltage
+     */
+    uint32 device_battery_ina_address = 9;
   }
 
   /*
@@ -863,4 +868,4 @@ message Config {
     LoRaConfig lora = 6;
     BluetoothConfig bluetooth = 7;
   }
-}
+}
\ No newline at end of file