The BMW remote control will automatically charge when inserted into the slot, and the BMW key usually does not need to be charged. If the battery life is up, you can only replace the key, and the battery inside the original factory key cannot be replaced. BMW is a German luxury car brand. BMW's car series has four models i, X, Z, pure numbers, 1, 2, 3, 4, 5, 6, 7, 8 and other series, as well as the M series (BMW's official high-performance modification department) which is improved on the basis of each series.