A system includes a number of electronic devices that uses multiple
voltage sources and a supply source to provide the different supply
voltages without up-converting a voltage level or down-converting a
voltage level. In an embodiment, the supply source is realized using a
battery having multiple voltage taps, where the battery provides the
multiple voltage sources. In an embodiment, the system is a hearing aid.
A single battery includes a common substrate on which a number of battery
regions is formed, where each battery region provides a supply voltage at
a rated voltage level different than the other battery regions. The
common substrate may be configured as a rigid platform, a flexible
platform in a folded configuration, a flexible platform in a rolled
configuration, or other platform configurations that provide for multiple
battery regions on a single platform.