[Nut-upsuser] battery.voltage Powercom Macan MRT-3000

[Greg Troxel]

That makes sense to me.   The field needs to be split into bytes.  The
low byte is the integer part of voltags, and the high part is units of
10 mV.  And this is per cell.

Probably the unit is measuring the total and then dividing by 36.  But
volts per cell will have the same interpretation for varying cell
counts, so it's a nice representation.