Hi~ o(*￣▽￣*)ブ, we are Damzon, we want to provide you with the Best Service and High Quality Products, so if you have any questions, do not hesitate to contact us!Replace Part Number: 3ICR19/66 A31N1519 Compatible NoteBook: ASUS X540s X540SA R540SA X540L Series Laptop*To extend notebook battery working time* ①To reduce the screen brightness: Use FN + down / up key combination to quickly adjust the brightness (the specific FN + which key need to see their respective notebooks) ②Make good use of standby, sleep and other functions: When a longer period of time without a computer, allowing the notebook standby or hibernate, both to save power and extend the life of the computer ③Open cpu speedstep function, can greatly extend battery working time: cpu speedstep feature is activated by default in the bios, when using the battery, the cpu will automatically use the frequency in order to achieve energy-saving purposes. If not open, press F2 into the BIOS to find Performance, set Speedstep Enable Enabled ④When using the battery, try to turn off the wireless, Bluetooth and infrared ports. Remove unused peripherals and avoid enabling large 3D programs, games, etc. to reduce unnecessary battery consumption*Damzon hassle-free warranty service*~\(≧▽≦)/~*Your repeat business is very important for us, so if you do not like our product or don't want It for any reason, please feel free to contact us, we will happily accept the return and give you your money back in 30 days and 12 months for warranty and exchange. Anyway, return or refund are available.(Please check your laptop model and buy it with confidence!)
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