You can use any Qualcomm certified Quick Charger 3 . And you can also use the new Qualcomm certified Quick Charger 4. If you check the Qualcomm site, you will see that the LG V40 is Quick Charge 4 certified. I purchased the Belkin wall model and it works well. The phone does not get warm and charges faster. I haven't quantified how much faster but using a charging app, the QC 3 charger that came with the phone averaged 530 ma and the QC 4 charger averaged 1020 ma.