Bought the 4A AC Power Adapter 6-Port USB Travel Charger from TrendsMobile which is located at Funan for S$29.90.
It has an output of 4A, but unfortunately it is shared with the 6 USB ports, I wish it says what is the maximum output per USB port. But nevertheless, I still think it is a pretty useful charger to have if you have plenty of USB devices to charge.
