diff --git a/package.json b/package.json
index c6251b4..55c49b5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "battery-state-card",
-  "version": "3.1.4",
+  "version": "3.1.5",
   "description": "Battery State card for Home Assistant",
   "main": "dist/battery-state-card.js",
   "author": "Max Chodorowski",
diff --git a/src/entity-fields/battery-level.ts b/src/entity-fields/battery-level.ts
index 942946b..693621e 100644
--- a/src/entity-fields/battery-level.ts
+++ b/src/entity-fields/battery-level.ts
@@ -24,7 +24,7 @@ export const getBatteryLevel = (config: IBatteryEntityConfig, hass?: HomeAssista
         const processedValue = stringProcessor.process(config.value_override.toString());
         return {
             state: processedValue,
-            level: isNumber(processedValue) ? Number(processedValue) : undefined,
+            level: isNumber(processedValue) ? toNumber(processedValue) : undefined,
             unit: getUnit(processedValue, undefined, undefined, config, hass),
         }
     }
@@ -107,7 +107,7 @@ export const getBatteryLevel = (config: IBatteryEntityConfig, hass?: HomeAssista
 
     return {
         state: displayValue || state,
-        level: isNumber(state) ? Number(state) : undefined,
+        level: isNumber(state) ? toNumber(state) : undefined,
         unit: getUnit(state, displayValue, unit, config, hass),
     };
 }
diff --git a/src/sorting.ts b/src/sorting.ts
index 9376854..8586aea 100644
--- a/src/sorting.ts
+++ b/src/sorting.ts
@@ -1,5 +1,5 @@
 import { IBatteryCollection } from "./battery-provider";
-import { isNumber, log, safeGetConfigArrayOfObjects } from "./utils";
+import { isNumber, log, safeGetConfigArrayOfObjects, toNumber } from "./utils";
 
 /**
  * Sorts batteries by given criterias and returns their IDs
@@ -76,8 +76,8 @@ import { isNumber, log, safeGetConfigArrayOfObjects } from "./utils";
  * @returns Comparison result
  */
  const compareNumbers = (a: string, b: string): number => {
-    let aNum = Number(a);
-    let bNum = Number(b);
+    let aNum = toNumber(a);
+    let bNum = toNumber(b);
     aNum = isNaN(aNum) ? -1 : aNum;
     bNum = isNaN(bNum) ? -1 : bNum;
     return aNum - bNum;
diff --git a/test/other/entity-fields/battery-level.test.ts b/test/other/entity-fields/battery-level.test.ts
index af63c75..013968b 100644
--- a/test/other/entity-fields/battery-level.test.ts
+++ b/test/other/entity-fields/battery-level.test.ts
@@ -194,12 +194,13 @@ describe("Battery level", () => {
         [false, "45", "dbm", { state: "45", level: 45, unit: "%" }], // test when the setting is turned off
         [true, "45", "dbm", { state: "56", level: 56, unit: "%" }, [ { from: "45", to: "56" } ]], // test when the state was changed by state_map
         [true, "45", "dbm", { state: "Low", level: 45, unit: undefined }, [ { from: "45", to: "45", display: "Low" } ]], // test when the display value was changed by state_map
+        [true, "45.4", "dbm", { state: "45,4", level: 45.4, unit: "[dbm]" }, undefined, ","], // test when default HA formatting returns state with comma as decimal point
     ])
-    ("default HA formatting", (defaultStateFormatting: boolean | undefined, entityState: string, unitOfMeasurement: string, expected: { state: string, level: number, unit?: string }, stateMap: IConvert[] | undefined = undefined) => {
+    ("default HA formatting", (defaultStateFormatting: boolean | undefined, entityState: string, unitOfMeasurement: string, expected: { state: string, level: number, unit?: string }, stateMap: IConvert[] | undefined = undefined, decimalPoint: string = ".") => {
         
         const hassMock = new HomeAssistantMock(true);
         hassMock.addEntity("Mocked entity", entityState);
-        hassMock.mockFunc("formatEntityState", (entityData: any) => `${entityData.state} [${unitOfMeasurement}]`);
+        hassMock.mockFunc("formatEntityState", (entityData: any) => `${entityData.state.replace(".", decimalPoint)} [${unitOfMeasurement}]`);
 
         const { state, level, unit } = getBatteryLevel({ entity: "mocked_entity", default_state_formatting: defaultStateFormatting, state_map: stateMap }, hassMock.hass);