diff --git a/custom_components/ups_over_network/config_flow.py b/custom_components/ups_over_network/config_flow.py
index d85ee23..425cff3 100644
--- a/custom_components/ups_over_network/config_flow.py
+++ b/custom_components/ups_over_network/config_flow.py
@@ -22,6 +22,8 @@
         vol.Required(CONF_RESOURCES): vol.All(
             cv.ensure_list, [vol.In(SENSOR_DEFINITIONS.keys())]
         ),
+        vol.Optional("low_battery_voltage", default=24): cv.positive_int,
+        vol.Optional("full_battery_voltage", default=27): cv.positive_int,
         vol.Optional(CONF_SCAN_INTERVAL, default=timedelta(seconds=30)): cv.time_period,
     },
     extra=vol.ALLOW_EXTRA,
diff --git a/custom_components/ups_over_network/const.py b/custom_components/ups_over_network/const.py
index ad562f8..e09977c 100644
--- a/custom_components/ups_over_network/const.py
+++ b/custom_components/ups_over_network/const.py
@@ -15,4 +15,5 @@
     "frequency": ["Frequency", UnitOfFrequency.HERTZ, "mdi:current-ac"],
     "battery_voltage": ["Battery Voltage", UnitOfElectricPotential.VOLT, "mdi:battery"],
     "temperature": ["Temperature", UnitOfTemperature.CELSIUS, "mdi:thermometer"],
+    "battery_level": ["Battery Level", PERCENTAGE, "mdi:battery"],
 }
diff --git a/custom_components/ups_over_network/sensor.py b/custom_components/ups_over_network/sensor.py
index c5de4e8..ffb3bdb 100644
--- a/custom_components/ups_over_network/sensor.py
+++ b/custom_components/ups_over_network/sensor.py
@@ -34,6 +34,8 @@ async def async_setup_platform(hass, config, async_add_entities, discovery_info=
     ups_protocol = config[CONF_PROTOCOL]
     resources = config[CONF_RESOURCES]
     scan_interval = config.get(CONF_SCAN_INTERVAL, timedelta(seconds=30))
+    low_battery_voltage = config["low_battery_voltage"]
+    full_battery_voltage = config["full_battery_voltage"]
 
     coordinator = UPSDataUpdateCoordinator(
         hass,
@@ -43,6 +45,8 @@ async def async_setup_platform(hass, config, async_add_entities, discovery_info=
         ups_host=ups_host,
         ups_port=ups_port,
         ups_protocol=ups_protocol,
+        low_battery_voltage=low_battery_voltage,
+        full_battery_voltage=full_battery_voltage,
     )
 
     await coordinator.async_config_entry_first_refresh()
@@ -64,12 +68,23 @@ class UPSDataUpdateCoordinator(DataUpdateCoordinator):
     """Class to manage fetching UPS data."""
 
     def __init__(
-        self, hass, logger, name, update_interval, ups_host, ups_port, ups_protocol
+        self,
+        hass,
+        logger,
+        name,
+        update_interval,
+        ups_host,
+        ups_port,
+        ups_protocol,
+        low_battery_voltage,
+        full_battery_voltage,
     ):
         """Initialize."""
         self.ups_host = ups_host
         self.ups_port = ups_port
         self.ups_protocol = ups_protocol
+        self.low_battery_voltage = low_battery_voltage
+        self.full_battery_voltage = full_battery_voltage
 
         super().__init__(hass, logger, name=name, update_interval=update_interval)
 
@@ -101,6 +116,15 @@ async def _async_update_data_megatec_q1(self, reader, writer):
             "load": float(values[3]),
             "frequency": float(values[4]),
             "battery_voltage": float(values[5]),
+            "battery_level": max(
+                0,
+                min(
+                    1,
+                    (float(values[5]) - self.low_battery_voltage)
+                    / (self.full_battery_voltage - self.low_battery_voltage),
+                ),
+            )
+            * 100,
             "temperature": float(values[6]),
         }
 
@@ -161,6 +185,12 @@ def state(self):
     @property
     def icon(self):
         """Icon to use in the frontend, if any."""
+        if self._sensor_type == "battery_level":
+            if self.state == 100:
+                return "mdi:battery"
+            if self.state < 10:
+                return "mdi:battery-alert-variant-outline"
+            return f"mdi:battery-{int(self.state / 10) * 10}"
         return self._sensor_icon
 
     @property