Removal of Surface Charge

WARNING: This page does not describe the selected car, but rather 208 other vehicles, including the 2010 BMW Z4, 2010 BMW X6 M, 2010 BMW X6, 2010 BMW X5 M, and 2010 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

If the battery has just been recharged, or the car has been driven, eliminate any surface charge by one of the following methods:

Allow the battery to sit for 2-3 hours.
Turn the headlights on high beam for 5 minutes and wait 5 minutes after turning off.
With battery load tester, apply a load of 1/2 the battery's CCA for 15 seconds, then wait 5 minutes.