must be get at Icom week!!!
If the battery has more than about 80% charge i.e all the blocks are black in the battery indicator on the radio then the charger will not charge.
If you wiggle it you can get the light to flicker or come on for a short time.
THIS IS NORMAL!!!
You have stated that the battery indicator is showing full so we have solved the problem I guess.
Please discharge the battery fully, may take a good few days if the unit is fully charged.
The charger is infact semi intelligent and senses how much charge is in the battery.
This is so you can not over charge the battery and damage it like on a lot of the competition!!