[cmwright]

This may be naive, but would it be possible for the voltage booster to only start 'boosting' after the battery falls under a certain voltage threshold? That would be seem to solve both of your concerns.

[tlrobinson]

But then you would of course need circuitry to measure the voltage and switch the booster on, and it wouldn't know what the correct threshold is.

[3JPLW]

The trouble is that the battery doesn't know the voltage requirements of the device it's powering. Should it start boosting at 1.4V? Or 1.25V? I have a hunch that it already does this for voltages near 1.5. The trouble is determining where you draw the line.

[wodenokoto]

That's easy. You license the batteriser technology to the gadget creators, they build it into their gadget and set the limit!

[gfsn54nsf]

Simple: Use the device until the batteries fail, then slip on the Batterizer[TM] and use it some more.