The frame is based off an E2, opperating simularly(sp?) to the electronics in the E2. So one would assume that the battery life would compare to an E2. So look up some info on the E2's battery life, it's supposed to be pretty good. I don't know though, never used an E2.
The E2 battery life is better but still not the best. I don't know about 200k shots. After about 20k, my battery life is at like 35%. I guess it drains down faster if you mess with the settings since that backlit lcd looks real pretty but can be a real juicer. Now that my settings are set and I wont be scolling the menus as much, I hope to get more shots per batt.
E1 does use juice when switched off and a lot of power during firing.
E2 Uses virtually NO juice when turned off, around 0.1 Volts per 6 Months. It also gets around 35-50% (depends on gun) more shots than E1 during firing.
Ego Uses virtually NO juice when turned off, around 0.1 Volts per 6 Months.
On top of that, where the E1 and E2 fire a large mechanical solenoid, and a solenoid valve, the Ego only fires a solenoid valve. It is the mechanical (linear) solenoid that uses the most juice. Also on E1/E2 the solenoid valve is enegised for anywhere from 30-1000 milliseconds per shot, and in the Ego the solenoid is fired for no more than the valve dwell setting, which is normally around 7 milliseconds.
Result! Hundreds of thousands of shots from the Ego per 9 volt. And I recon that if you turned off the eyes (they use more power thatn all the other electronic components, including the backlite) you would be looking at well over half-a-million shots.