Was wondering if someone could help with this.

I've been noticing that when left overnight on charge, the device states it is fully charged. Battery widget and BatteryGraph application both state 98% charge. However as soon as i remove the charger, the percentage rapidly drops to around 89%. If i put the charger immediately back in i just get "battery full".

BatteryGraph shows the charge dropping apparently linearly from 98% to 89% over approx 5 mins. regardless of useage.

Is this normal behavior?

Thanks in advance.

EDIT: Forgot to mention that the remaining 89% then performs as it should, decreasing regularly over the day.