diff --git a/kubernetes/apps/home-assistant-iot/shelly-manager-deployment.yaml b/kubernetes/apps/home-assistant-iot/shelly-manager-deployment.yaml
index 7e583b0a..0d60f3e9 100644
--- a/kubernetes/apps/home-assistant-iot/shelly-manager-deployment.yaml
+++ b/kubernetes/apps/home-assistant-iot/shelly-manager-deployment.yaml
@@ -106,6 +106,9 @@ spec:
             # The URL devices download firmware from: Service shelly-manager-firmware.
             - name: Firmware__PublicBaseUrl
               value: http://firmware.shelly-manager.renner.uno
+            # Battery devices get their update when they call in.
+            - name: Firmware__SleepyRollout
+              value: "true"
             - name: ShellyManager__DnsSuffix
               value: iot.renner.uno
             # BLE radios: ESP32 esphome bluetooth_proxy nodes (e.g. the M5 Atom