diff --git a/grafana_dashboard.json b/grafana_dashboard.json
index 7373ae6..a93413b 100644
--- a/grafana_dashboard.json
+++ b/grafana_dashboard.json
@@ -156,7 +156,7 @@
             "type": "influxdb",
             "uid": "${DS_INFLUXDB}"
           },
-          "query": "SELECT last(\"battery1_power\") AS \"Battery\" FROM \"$measurement\" WHERE serialnumber =~ /^$serial$/ AND $timeFilter",
+          "query": "SELECT last(\"battery1_power\") * -1 AS \"Battery\" FROM \"$measurement\" WHERE serialnumber =~ /^$serial$/ AND $timeFilter",
           "refId": "A",
           "rawQuery": true,
           "resultFormat": "time_series"
@@ -828,7 +828,7 @@
             "type": "influxdb",
             "uid": "${DS_INFLUXDB}"
           },
-          "query": "SELECT mean(\"battery1_power\") AS \"Batterie (+Entladen/-Laden)\" FROM \"$measurement\" WHERE serialnumber =~ /^$serial$/ AND $timeFilter GROUP BY time($__interval) fill(null)",
+          "query": "SELECT mean(\"battery1_power\") * -1 AS \"Batterie (+Entladen/-Laden)\" FROM \"$measurement\" WHERE serialnumber =~ /^$serial$/ AND $timeFilter GROUP BY time($__interval) fill(null)",
           "refId": "C",
           "rawQuery": true,
           "resultFormat": "time_series"
@@ -2110,7 +2110,7 @@
             "type": "influxdb",
             "uid": "${DS_INFLUXDB}"
           },
-          "query": "SELECT mean(\"battery1_current\") AS \"Batteriestrom\" FROM \"$measurement\" WHERE serialnumber =~ /^$serial$/ AND $timeFilter GROUP BY time($__interval) fill(null)",
+          "query": "SELECT mean(\"battery1_current\") * -1 AS \"Batteriestrom\" FROM \"$measurement\" WHERE serialnumber =~ /^$serial$/ AND $timeFilter GROUP BY time($__interval) fill(null)",
           "refId": "A",
           "rawQuery": true,
           "resultFormat": "time_series"