Thanks for the good points. My rough calculations suggested enough current used periodically to last several years, though Id be happy for one year usage.
The current will be drawn through a PIC output line (rated maximum 15ma) which will be the only component directly fed from the battery source. So I can basically place a large cap in parallel with the supply lines, which will allow it to fill at leisure, and be drained as requested?
Will the capacitor naturally leak causing the battery to prematurely empty?
Thanks,
Rob.