BQ27421 : Battery level changes improperly

Hi,

I am using BQ 27421 for measuring the Battery level. I am reading battery level at every 1 second and send it over BLE. The battery fuelgauge returns correct value normally. But when I observed it continuously, the battery percentage jumps directly from 48 to 45 and from 45 to 43. It was not changing in sequence.

Do I need to configure it somewhere? Has anyone face this issue?

Thanks,

Dhaval