If you have a battery charger...you can hook it up to the jump start posts in the engine bay, then insert your remote key into the ignition and turn it to POSITION 1...leave it there overnight (for up to the 30 hours needed to fully charge your key's battery).

The battery inside the key only charges when the ignition is in KL-R (position 1) or KL-15 (position 2) or KL-30 (position key returns to once engine has started)...using a battery charger hooked up to the jump start posts....prevents the car's battery from draining (which you don't want to happen with the key in the ignition...doing so has been known to kill the key).

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• 2015 f06 650ix GC (Moonstone exterior/Cohiba brown Merino Leather interior)
• 2014 f15 X5 50i (Space Gray exterior/Mocha Nappa Leather interior)