diff --git a/app/include/zmk/battery.h b/app/include/zmk/battery.h
index f62219c1..df6f1ad1 100644
--- a/app/include/zmk/battery.h
+++ b/app/include/zmk/battery.h
@@ -7,3 +7,6 @@
 #pragma once
 
 uint8_t zmk_battery_state_of_charge();
+#if IS_ENABLED(CONFIG_ZMK_SPLIT_ROLE_CENTRAL)
+uint8_t zmk_battery_state_of_peripheral_charge();
+#endif
diff --git a/app/src/battery_split.c b/app/src/battery_split.c
index acae7f96..4e3a4c9c 100644
--- a/app/src/battery_split.c
+++ b/app/src/battery_split.c
@@ -72,6 +72,8 @@ ZMK_SUBSCRIPTION(peripheral_batt_lvl_listener, zmk_peripheral_battery_state_chan
 
 uint8_t zmk_battery_state_of_charge() { return last_state_of_charge; }
 
+uint8_t zmk_battery_state_of_peripheral_charge() { return last_state_of_peripheral_charge; }
+
 static int zmk_battery_update(const struct device *battery) {
     struct sensor_value state_of_charge;