Skyvast 11.1V 7800mAh New Laptop Battery AS10D31 for Acer Aspire 4253 4551 4738 4741 4750 4771 5251 5336 5349 5551 5560 5733 5741 5750, TravelMate 4740 5735 5740, Gateway NV55C NV53A NV59C Battery type: Li-ion ; Capacity: 7800mAh ; Voltage: 11.1V. Fit Machine Models:Acer Aspire 4253 4551 4552 4738 4741 4750 4771 5251 5253 5336 5349 5551 5552 5560 5733 5733Z 5741 5742 5750 5750G 5755 7551 7552G 7560 7741 7741Z 7750 7750G and Acer TravelMate 4740 4740G 5735 5735Z 5740 5740G and Gateway NV55C NV53A NV59C Grade A cell ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and reliability. Customer Questions: Any questions you can contact with us, we will respond within 24 hours. Exchange/Refund Policy: Free exchange/refund within 12 months. You can keep the order before we resend a new one and we will email a prepaid return label to help you return the order.