Perhaps the long period at reduced voltage had something to do with it.

These operate at very low voltages and without magnetic fields.

There has been no practical way of generating direct current at high voltages.

Diesel engines are often used for back up generation, usually at low voltages.

It is useful for generating very large currents at low voltage.

But it looks like, I mean, this is really interesting because the battery runs at useful voltages.

Similarly, the device can still be operated at low voltages.

Sometimes an insulation fault in a power cable will not show up at lower voltages.

Results for all three processors are included at stock speeds and voltages.

A common concern is that some lighting will fail to strike at lower voltages.