Abstract: Battery charging circuits can change from charging a battery in a constant current mode using an amplifier circuit output to control a voltage controlled current source to provide substantially constant current to the battery to charging the battery in a constant voltage mode using the amplifier circuit output to control the voltage controlled current source to provide a varied current to the battery. Related methods are disclosed.

Abstract: The present invention provides polymer blends having a first component of a polymeric material capable of being cross-linked and selected from the group consisting of an ethylene containing polymer, the first component present in an amount by weight of the blend from about 50% to about 95%, the first component having a first melting point temperature determined by DSC; and a second component of a non-readily cross-linkable polymeric material and selected from the group consisting of propylene containing polymers and methyl pentene containing polymers, the second component being present in an amount by weight of the blend from about 50% to about 5%, the second component having a second melting point temperature determined by DSC; and a portion of the first component being cross-linked and the second component is essentially free of cross-linking.