diff --git a/src/app/battery/battery.component.html b/src/app/battery/battery.component.html
index 3861e5c..a956ac2 100644
--- a/src/app/battery/battery.component.html
+++ b/src/app/battery/battery.component.html
@@ -1,7 +1,7 @@
 <div class="p-3">
     <div class="d-flex mb-3">
         <div class="d-flex flex-grow-1 align-items-center">
-            <h3 class="mb-0 text-white">Powerwall: {{batteryService.total | round}} V</h3>
+            <h3 class="mb-0 text-white">Powerwall: {{batteryService.charge | round}} V</h3>
         </div>
         <div class="d-flex flex-grow-1 align-content-center justify-content-end">
             <mat-button-toggle-group [(ngModel)]="batteryService.relayMode" (change)="batteryService.setRelayMode($event.value)">
diff --git a/src/app/battery/battery.service.ts b/src/app/battery/battery.service.ts
index 2c16c4f..341c38e 100644
--- a/src/app/battery/battery.service.ts
+++ b/src/app/battery/battery.service.ts
@@ -8,9 +8,10 @@ export class BatteryService {
     readonly firestore;
 
     batteries = [];
+    charge: number = 0;
     last: Date;
     relayMode?: boolean = null;
-    total: number = 0;
+    temp: number = 0;
 
     get icon() {
         if (!this.batteries.length) return 'battery_alert';
@@ -61,7 +62,8 @@ export class BatteryService {
                     tempHistory: data.modules[key].map((val, i) => ({name: i, value: val.temp}))
                 }
             });
-            this.total = this.batteries.reduce((acc, battery) => acc + battery.charge, 0) / 2;
+            this.charge = this.batteries.reduce((acc, battery) => acc + battery.charge, 0) / 2;
+            this.temp = this.batteries.reduce((acc, battery) => acc + battery.temp, 0) / 4;
         });
     }