The present invention provides devices and methods for the treatment of atrial fibrillation. A wireless local area network modem of a user equipment automatically turns on when the UE detects that the UE has entered into an area that employs a home network including a femto Node B and a WLAN access point. The battery charger in accordance with the present invention periodically monitors the open-circuit voltage of the battery cell and reduces the charging voltage to when the battery cell voltage reaches the optimal value. In a further alternative embodiment, the entire blade, including wing blades, may additionally be pivoted with respect to the vehicle, resulting in a very adjustable blade which is well adapted to emulate prior art box plowpushers, conventional plows, pull backdrag plows, V-plows and fold-out plows. The present invention also relates to a process for making a coated metal oxide substrate.