Got a chance to test Aivolt's Battery Saw. Was impressed with the power when it has dual batteries. I've only tested an 18 volt saw before and this one is at 40 volts. What a difference.

It is faster to saw with this compared to my 18 volt saw.

Battery length depends on how hard the job is and the type of wood.

Recommends that you buy an extra set of batteries if you will be sawing a lot and can't bear to wait for them to be charged.

I am very satisfied with this saw. The price is about 150 euros on amazon.