Hahnel's DuoPal Extra Kit is an all-in-one battery charger and power bank with a spare Hahnel GoPro Hero4 battery. The Hahnel DuoPal Extra may be used to simultaneously charge a pair of Go Pro Hero4 batteries, or to charge any USB compatible device.
Hahnel's DuoPal Extra Kit is an all-in-one battery charger and power bank with a spare Hahnel GoPro Hero4 battery. The Hahnel DuoPal Extra may be used to simultaneously charge a pair of Go Pro Hero4 batteries, or to charge any USB compatible device.