These days with Clover and OC boot loader, we don’t have to patch the battery laptops like before with Rehabman’s battery dsdt patch but sometimes the battery shows up and sometimes it doesn’t. is to rescue and make the battery more reliable than with all the patches. It’s really simple, just download the ECEnabler.kext, put in the Kexts folder together with ACPIBatteryManagement.kext of your choice and the battery will show up. On some laptops it may not work.