[ltp] Almost dead battery

[Henrique de Moraes Holschuh]

> design_voltage:10800

> group0_voltage:3934
> group1_voltage:3936
> group2_voltage:3931
> group3_voltage:0

Your battery pack has three groups of 2 or 3 cells, and that's their
voltage in mV.

> voltage:11801

And this should be measured independently from the groups, but that's
very likely a hardware implementation detail at the battery-pack side.

-- 
  Henrique Holschuh