Bmw keys are charged while in the ignition.
Bmw smart key charging.
Insert the display key into the charging pocket for wireless charging.
Pull the hood release twice and open the hood.
From position 1 kl r and 2 run position the key s battery will be charged using inductive charging.
Open the center console of equipped bmw models and locate the charging pocket along the side of the console closest to the driver s seat.
Put the display key into the center of the pocket.
The proper way to charge a bmw battery is by using the jump start terminals under the hood.
Buy bmw advanced battery charging system.
A cheap 10 way to charge your bmw key fobs back up and probably any other rechargeable key fob.
Open the driver door using the emergency key found inside the key fob.
Make sure the lock button on the key fob is facing upwards.
I bought it here.