| | Solved ( I think)
I found that the 8700 will always glow solid green when fully charged regardless of the service led setting. On the 8800 however, if I connect the charger when the unit is powered down the led will blink until fully charged then go to solid regardless of the service led setting.
If I connect the charger while the 88 is powered up and it powers down via auto on/off, the led blinks all the time.
Of course in the overall scheme of things this behavior is of little significance, I just became so used to the 8700 that I took particular notice of this.