diff --git a/meshtastic/config.options b/meshtastic/config.options
index 3f6d81c..597f95d 100644
--- a/meshtastic/config.options
+++ b/meshtastic/config.options
@@ -17,8 +17,10 @@
 *LoRaConfig.channel_num int_size:16
 
 *PowerConfig.device_battery_ina_address int_size:8
+*PowerConfig.ocv max_count:11
+*PowerConfig.ocv int_size:16
 
 *SecurityConfig.public_key max_size:32
 *SecurityConfig.private_key max_size:32
 *SecurityConfig.admin_key max_size:32
-*SecurityConfig.admin_key max_count:3
+*SecurityConfig.admin_key max_count:3
\ No newline at end of file
diff --git a/meshtastic/config.proto b/meshtastic/config.proto
index 33eaa58..953a952 100644
--- a/meshtastic/config.proto
+++ b/meshtastic/config.proto
@@ -482,6 +482,12 @@ message Config {
      */
     uint32 device_battery_ina_address = 9;
 
+    /*
+     * Open circuit voltage array (in millivolts) for battery percentage estimation.
+     * Provide NUM_OCV_POINTS entries from full to empty. If unset, device defaults are used.
+     */
+    repeated uint32 ocv = 10;
+
     /*
      * If non-zero, we want powermon log outputs.  With the particular (bitfield) sources enabled.
      * Note: we picked an ID of 32 so that lower more efficient IDs can be used for more frequently used options.