[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!

[granos]

But they don't control the IP for the actual boost circuitry. Thats trivially easy to do. And from the comments in this thread it seems like lots of electronics already do it.

[gfsn54nsf]

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