[ OUR GUARANTEE ] Within 30 days of purchase, we offer a no-questions-asked full money back guarantee. Additionally, for two years from the date of purchase, we will exchange your product free of charge should it become defective. NOBODY beats our guarantee!. PERFORMANCE, SAFETY, RELIABILITY - All of our product lines are put through rigorous quality control procedures to ensure safe, reliable operation for years to come. We guarantee our products will charge your device as efficiently as the original charger, or any other replacement. In addition, our products are in compliance with top industry standards, and include numerous safety mechanisms, including protection against short circuiting, overvoltage, overcurrent, and internal overheating. Compatible with Acer Aspire Nitro V15 VN7-593G VN7-593G-738X VN7-593G-73KV VN7-593G-76SS Aspire 7 V17 VN7-793G VN7-793G-717L VN7-793G-71AG VN7-793G-719P VN7-793G-741P VN7-793G-709A VN7-793G-758J P/N ADP-135KB ADP-180MB K. Compatible with Acer Nitro 5 AN515-51 Acer Predator Helios 300 G3-571 G3-571-77QK G3-571-51NK; G3-572 G3-572-78JY G3-572-7526 G3-572-73FH G3-572-72YF G3-572-72MT G3-572-795X PH317-51 PH317-51-70KH PH317-51-78SZ PH317-51-787B PH317-51-75GZ PH317-51-77QK. Input: 100-240V 50-60Hz Output:19.5V 9.23A 180W (fit 19V 7.1A 135W) Connector size:5.5*1.7mm ;--Please confirm the specifications and plug size before purchg!If you can't make sure,pls feel free to contact us.