I have been wondering whether I can use a 5V 2A or 5V 3A charger to charge my tactix 7, since it is hard to find a portable power bank with a 5V 1A output port, all the portable power banks seem to have the fast charging characteristic. When going out for a hiking for several weeks, I think it is still necessary to take a portable power bank to charge my watch, so anyone knows can the tactix or fenix be charged with a current of 2A or higher?