RAVPower Portable Charger
When you’re travelling sometimes there isn’t a power supply in your nearest vicinity and today’s travel kit comes with a range of electric products from a smartphone to a GoPro. Those 12hr bus rides or hikes up volcanoes or overnight camps on desert islands often don’t come with electricity sockets do you’re going to need an external power supply.
The RAVPower portable charger is the one I use. With three USB ports and around five iPhone charges, this thing will keep you charged for a couple of days or longer depending on your usage.