diff --git a/meshtastic/config.options b/meshtastic/config.options
index 9310cf0d..9d12166b 100644
--- a/meshtastic/config.options
+++ b/meshtastic/config.options
@@ -15,6 +15,7 @@
 *LoRaConfig.channel_num int_size:16
 
 *PowerConfig.device_battery_ina_address int_size:8
+*PowerConfig.device_battery_num_cells int_size:8
 
 *SecurityConfig.public_key max_size:32
 *SecurityConfig.private_key max_size:32
diff --git a/meshtastic/config.proto b/meshtastic/config.proto
index e308529d..5de9d272 100644
--- a/meshtastic/config.proto
+++ b/meshtastic/config.proto
@@ -430,6 +430,11 @@ message Config {
      */
     uint32 device_battery_ina_address = 9;
 
+    /*
+     * Number of battery cells in use. Battery charge is calculated using (v / num_cells).
+     */
+    uint32 device_battery_num_cells = 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.