System and method of power management for a solar powered device

摘要

A solar powered light assembly having an integral power management system includes a means for collecting solar energy, and a plurality of energy storage devices. The device also includes a control means for selecting to charge one energy storage device and selecting to discharge one energy storage device to a predetermined level before selecting to recharge the selected discharging energy storage device. The device also includes a sensing means for sensing a predetermined charging condition and an energy charge switching means for selectively charging one of the energy storage devices. The device further includes a discharge sensing means and an energy discharge switching means for selectively discharging energy from the selected discharging energy storage device and a load switching means for delivering energy from the selected discharging energy storage device to the load for powering the solar powered device.