Original charger 1.5 A
3 ft cable - shows AC charge, fast charge
6 ft cable - can' make up it's mind, it's either AC charge or USB charge. Sometimes is switches between them during the charging cycle. Very weird!
10 ft cables - shows USB charge, slow charge
Motorola charger 0.8A
Shows USB charge, slow charge regardless of the cable length.
Generic no-name dualport 1A charger
3&6 ft cables - AC charge
10 ft cables - USB charge