diff --git a/tconnectsync/parser/nightscout.py b/tconnectsync/parser/nightscout.py
index 8b533ff..00c6022 100644
--- a/tconnectsync/parser/nightscout.py
+++ b/tconnectsync/parser/nightscout.py
@@ -195,14 +195,15 @@ def activity(created_at, duration, reason="", event_type=ACTIVITY_EVENTTYPE, pum
         }
 
     @staticmethod
-    def devicestatus(created_at, batteryVoltage, batteryString, pump_event_id=""):
+    def devicestatus(created_at, batteryVoltage, batteryPercent, pump_event_id=""):
         return {
             "device": ENTERED_BY,
             "created_at": created_at,
             "pump": {
                 "battery": {
                     "voltage": float(batteryVoltage),
-                    "string": batteryString
+                    "percent": int(batteryPercent) if batteryPercent else None,
+                    "status": "%.0f%s" % (batteryPercent, '%')
                 },
             },
             "pump_event_id": pump_event_id
diff --git a/tconnectsync/sync/tandemsource/process_device_status.py b/tconnectsync/sync/tandemsource/process_device_status.py
index 0461e25..545916c 100644
--- a/tconnectsync/sync/tandemsource/process_device_status.py
+++ b/tconnectsync/sync/tandemsource/process_device_status.py
@@ -59,7 +59,7 @@ def daily_basal_to_nsentry(self, event):
         return NightscoutEntry.devicestatus(
             created_at=event.eventTimestamp.format(),
             batteryVoltage=(float(event.batterylipomillivolts or 0)/1000),
-            batteryString="%.0f%s" % (100*event.batteryChargePercent, '%'),
+            batteryPercent=int(100*event.batteryChargePercent),
             pump_event_id = "%s" % event.seqNum
         )
 
diff --git a/tests/sync/tandemsource/test_process_device_status.py b/tests/sync/tandemsource/test_process_device_status.py
index 1ae6cc7..7d4e89f 100644
--- a/tests/sync/tandemsource/test_process_device_status.py
+++ b/tests/sync/tandemsource/test_process_device_status.py
@@ -38,7 +38,8 @@ def test_single_event_no_last_uploaded(self):
             'device': 'Pump (tconnectsync)',
             'pump': {
                 'battery': {
-                    'string': '48%',
+                    'status': '48%',
+                    'percent': 48,
                     'voltage': 14.08
                 }
             },
@@ -90,7 +91,8 @@ def test_multiple_event_with_last_uploaded(self):
             'device': 'Pump (tconnectsync)',
             'pump': {
                 'battery': {
-                    'string': '47%',
+                    'status': '47%',
+                    'percent': 47,
                     'voltage': 13.824
                 }
             },
@@ -132,7 +134,8 @@ def test_multiple_event_only_latest_applied(self):
             'device': 'Pump (tconnectsync)',
             'pump': {
                 'battery': {
-                    'string': '46%',
+                    'status': '46%',
+                    'percent': 46,
                     'voltage': 13.568
                 }
             },