In a large bowl, mix flour, baking powder, and salt.
Add eggs, then slowly add coconut milk while stirring with a wooden spoon. Continue stirring until batter is smooth.
Add sugar, ginger, and coconut, and mix. Then let batter sit for 30 minutes.
When batter is ready, heat enough vegetable oil to fry in a heavy pot or a deep fryer. Add the coins from one banana to the batter. Work the banana coins to ensure they are well battered, then add them one at a time to the hot oil. Cook for about 3 minutes (until crispy and golden). Remove with a slotted spoon and drain on paper towel.
Repeat previous two steps until all 8 bananas have been battered and fried.