Has some pros: Pretty light, wood cuts well (I haven't tried metal yet). I sawed a lot (he upholstered the floor of the wall with 5m boards 25 * 100), and on the battery only 1 division went out - apparently the energy efficiency is also on top. Got cons: sawing "along the line" is not very convenient, since the sawdust just falls on this line and has to be blown off. It is also not convenient to cut "on weight" - it is important that there is a good clamping of the saw bar to what we are sawing.