Long life, low power, multicell battery

The purpose of the proposed Phase 2 work is to create a low-cost multi-cell battery capable of constant power draw in the 100 nA range to provide back-up power source for an SRAM memory chip such as those used in FPGA (field programmable gate array) architectures. The battery to be developed under the current work program will proved for up to 30 year active life (under 100 nA load). This will be achieved by utilizing an array of sub-cells that can be individually triggered to deliver the required amount of energy while keeping the rest of the array in the reserve (unused, fresh) state.