The life in the Radio Shack radio is about a year, The GE is less. What I will do is measure the current
during power-on , and power off. The same issue is in telephone answering units and scanners here.
The TADs have a strange current curve on the battery backup.
This never was an issue when Radio Shack gave you a battery a month free with the battery-club card.
What I hope to do is make a circuit that, A. informs the logic that a battery is there, and B. Balances the
battery on continuous float. Those old clock chips are pigs though, just to keep it ticking even though the
display drivers are not needed. The General Electric processor, also switches the tuner logic from AM to FM and
turns the radio on and off.