I have just been using a regular 2.4 amp car charger and only rarely have I had to use it, the battery life on this phone is pretty good. I charge my phone every night at bedtime and use a Anker 2.4 amp charger and a Belkin USB C cable for overnight charging. I only use the DASH charger when I need a fast charge or I forget to charge at night. It seems the Oneplus 3 charges fine with the above mentioned charging equipment, just don't buy cheap USB C cables or a Cheap charger, stick with high quality cables and charger at 2.4 amps it charges quick enough.