Hi Vacman,
We have many jobs well over 40 jobs in fact that require a battery operated vac or battery operated equipment where there is no Mains electricity on hand.
However as the equipment is more expensive than your everyday equipment you can adjust the price accordingly.
Some sites we have to have a generator in site.
The tools are endless
WFP systems run on Battery, Vacs run on battery, carpet cleaners run on battery, floor buffers on battery, ride on floor scrubbers on battery. and many more designed for this exact reason. Cable safety and no electricity
Jobs done during the day where there is high risk of people tripping over cables, so battery powered tools were invented for this reason. It lowered the insurance for cleaning companies if they use cableless equipment.
Dave