Whoah! I guess I need to buy a good power bank instead. At least, I do not need to pay that much money. Speaking of it, I need to buy a new one because it is starting to wear off now.I tried this when I was in Davao city and in domestic airport, but the pay per hour is so impossible at 80 pesos per hour in domestic airport and in Davao city terminal at 20 pesos for 10 minutes superb business.