UL Certified Safety -- This product charger is certified and listed by UL (America's most recognized and trusted safety testing laboratory) because it is recognized as having the highest level of quality and safety in the industry -- REMEMBER: It can be charged, but it's not all as safe and quality-assured as our chargers. Exceptional Compatibility -- Compatible with Acer Predator Triton 500 PT515, Nitro 5 7, AN515-45 AN515-57 AN517-41 AN517-52 AN517-54 AN517-55 AN715-52-715S Laptop, Fit for Predator Helios 300 G3-571 G3-572 PH315 PH317, Fit for Predator Triton 300 PT314 PT315 Laptop - It will not work properly If your device requires over 180W.