diff --git a/source/_integrations/sonos.markdown b/source/_integrations/sonos.markdown
index 6cdeb50c6f0..03deb02999d 100644
--- a/source/_integrations/sonos.markdown
+++ b/source/_integrations/sonos.markdown
@@ -24,7 +24,9 @@ The `sonos` integration allows you to control your [Sonos](https://www.sonos.com
 
 ## Battery support
 
-Battery sensors are currently supported for the `Sonos Roam` and `Sonos Move` devices. For each speaker with a battery, a `sensor` showing the current battery charge level and a `binary_sensor` showing the power state of the speaker are created. The `binary_sensor` reports if the speaker is currently powered by an external source and its `power_source` attribute shows which specific source is providing the current power. This source attribute can be one of `BATTERY`, `SONOS_CHARGING_RING` if using wireless charging, or `USB_POWER` if charging via USB cable. Note that the Roam will report `SONOS_CHARGING_RING` even when using a generic Qi charger.
+Battery sensors are supported for the `Sonos Roam` and `Sonos Move` devices on S2 firmware.
+
+For each speaker with a battery, a `sensor` showing the current battery charge level and a `binary_sensor` showing the power state of the speaker are created. The `binary_sensor` reports if the speaker is currently powered by an external source and its `power_source` attribute shows which specific source is providing the current power. This source attribute can be one of `BATTERY`, `SONOS_CHARGING_RING` if using wireless charging, or `USB_POWER` if charging via USB cable. Note that the Roam will report `SONOS_CHARGING_RING` even when using a generic Qi charger.
 
 ## Services