Battery Level Xiaomi Devices N/A



I just finish my influxDB, connected with my Home Assistant server.
I made a dashboard with all sensors battery levels. During 2 days all graphics show me battery level status, but now some graphics show me N/A symbol.
I checked arrays and some sensors send information but others sensors arrays are empty.
Has anybody xiaomi sensors on influxdb.? and why some sensors show battery status level and others N/A?