A mobile communication device comprising: a communication subsystem for wireless two-way data and voice communication with a wireless network, wherein the communication subsystem comprises a microphone, a receiver, one or more antennas, signal processors, and other components associated with wireless communications including a radio interconnected with the microphone and the receiver, the receiver comprising a voice coil and at least one of a hearing aid coil and a T-coil; a battery (708, 1008, 1408, 1508), inserted into the mobile communication device, said battery (708, 1008, 1408, 1508) comprising: a battery portion (710, 1010, 1409, 1509) enabled to provide electrical power, said battery portion (710, 1010, 1409, 1509) emitting a magnetic field when in operation; a magnetic shield portion (712, 1012, 1412, 1512a, 1512b) arranged relative to said battery portion (710, 1010, 1409, 1509) such that magnetic flux from said battery portion (710, 1010, 1409, 1509) is routed through said magnetic shield portion (712, 1012, 1412, 1512a, 1512b) and away from said receiver when said battery (708, 1008, 1408, 1508) is in operation in said mobile communication device, said magnetic shield portion (712, 1012, 1412, 1512a, 1512b) being planar and of a first thickness that provides structural support to said battery (708, 1008, 1408, 1508), wherein said magnetic shield portion (712, 1012, 1412, 1512a) is located between said battery portion (708, 1008, 1408, 1508) and said receiver; and a case containing the battery portion (710, 1010, 1409, 1509), said magnetic shield portion (712, 1012, 1412, 1512a, 1512b) being internal to said case and being located between the battery portion (710, 1010, 1409, 1509) and the case. a communication subsystem for wireless two-way data and voice communication with a wireless network, wherein the communication subsystem comprises a microphone, a receiver, one or more antennas, signal processors, and other components associated with wireless communications including a radio interconnected with the microphone and the receiver, the receiver comprising a voice coil and at least one of a hearing aid coil and a T-coil; a battery (708, 1008, 1408, 1508), inserted into the mobile communication device, said battery (708, 1008, 1408, 1508) comprising: a battery portion (710, 1010, 1409, 1509) enabled to provide electrical power, said battery portion (710, 1010, 1409, 1509) emitting a magnetic field when in operation; a magnetic shield portion (712, 1012, 1412, 1512a, 1512b) arranged relative to said battery portion (710, 1010, 1409, 1509) such that magnetic flux from said battery portion (710, 1010, 1409, 1509) is routed through said magnetic shield portion (712, 1012, 1412, 1512a, 1512b) and away from said receiver when said battery (708, 1008, 1408, 1508) is in operation in said mobile communication device, said magnetic shield portion (712, 1012, 1412, 1512a, 1512b) being planar and of a first thickness that provides structural support to said battery (708, 1008, 1408, 1508), wherein said magnetic shield portion (712, 1012, 1412, 1512a) is located between said battery portion (708, 1008, 1408, 1508) and said receiver; and a case containing the battery portion (710, 1010, 1409, 1509), said magnetic shield portion (712, 1012, 1412, 1512a, 1512b) being internal to said case and being located between the battery portion (710, 1010, 1409, 1509) and the case. a battery portion (710, 1010, 1409, 1509) enabled to provide electrical power, said battery portion (710, 1010, 1409, 1509) emitting a magnetic field when in operation; a magnetic shield portion (712, 1012, 1412, 1512a, 1512b) arranged relative to said battery portion (710, 1010, 1409, 1509) such that magnetic flux from said battery portion (710, 1010, 1409, 1509) is routed through said magnetic shield portion (712, 1012, 1412, 1512a, 1512b) and away from said receiver when said battery (708, 1008, 1408, 1508) is in operation in said mobile communication device, said magnetic shield portion (712, 1012, 1412, 1512a, 1512b) being planar and of a first thickness that provides structural support to said battery (708, 1008, 1408, 1508), wherein said magnetic shield portion (712, 1012, 1412, 1512a) is located between said battery portion (708, 1008, 1408, 1508) and said receiver; and a case containing the battery portion (710, 1010, 1409, 1509), said magnetic shield portion (712, 1012, 1412, 1512a, 1512b) being internal to said case and being located between the battery portion (710, 1010, 1409, 1509) and the case.