Replaces OEM # AP21A8T, AP21A7T, AP21A5T, KT0040G014, KT00407011, KT00405012 Fits: ACER NITRO AN16-41, AN16-42, AN16-72, AN17-42, AN517-55, PREDATOR HELIOS PH16-72, PH18-71, PH18-72, PH315-55, PH317-56, PREDATOR HELIOS NEO PHN16-72, PHN18-71 Specs: 15.4V, 5884MAH, 90.61WH, 4 CELL Brand New GreenTech replacement battery - 6 Month Replacement Warranty Each product has undergone rigorous testing to ensure the correct voltage, circuit protection, stable current, low self-discharge and CE / FCC / RoHS Certified for safety