Some of the popular models this battery can be use for, are:
Asus
R541UA, R541UA-RB51, VivoBook Max X541SA, VivoBook Max X541SA-1A, VivoBook Max X541SA-1C, VivoBook Max X541SA-3F, VivoBook Max X541SA-3G, VivoBook Max X541SA-3H, VivoBook Max X541SC, VivoBook Max X541SC-1A, VivoBook Max X541SC-1C, VivoBook Max X541U, VivoBook Max X541UA-1A, VivoBook Max X541UA-1C, VivoBook Max X541UA-3G, VivoBook Max X541UV, VivoBook Max X541UV-1A, VivoBook Max X541UV-1C, VivoBook Max X541UV-3F, VivoBook Max X541UV-3G, X541SA, X541SA-1A, X541SA-1C, X541SA-3F, X541SA-3G, X541SA-3H, X541SC, X541SC-1A, X541SC-1C, X541U, X541UA, X541UA-1A, X541UA-1C, X541UA-3G, X541UV, X541UV-1A, X541UV-1C, X541UV-3F, X541UV-3G
Your new battery comes in a discharged condition and must be charged before use.
Upon initial use (or after prolonged storage period) the battery may require two to three charge/discharge cycles before achieving maximum capacity.
If the battery is not going to be used for more than a month, it is recommended that it is removed from the device and stored in a cool, dry, clean place.
It is normal for a battery to become warm during charging and discharging.
A charged battery will eventually lose its charge if unused, it may therefore be necessary to recharge the battery after a storage period.