Is the M12 Hackzall enough for cutting thick lumber?

Not really. It handles thin wood, PVC and conduit well, but the 12V motor and 0.5-inch stroke bog down in thick or hard stock. Use an 18V saw for that.

How long does the 1.5Ah battery last?

Expect short runs under continuous load. Light trim and occasional cuts are fine; long cutting sessions will drain it quickly, so a spare or larger M12 pack helps.

Does it use the same batteries as other M12 tools?

Yes. It runs on any Milwaukee M12 battery, so it fits an existing M12 kit. Larger M12 packs add runtime at the cost of weight.

Can it cut PVC pipe and conduit?

Yes. PVC, conduit and thin metal are where it works best, and the one-hand grip helps in tight spaces.

What comes in the kit?

The kit includes the saw, one 1.5Ah M12 battery and a charger. Blades are not included.

How does it compare with a full-size Sawzall?

It is far smaller and lighter and can be used one-handed, but it has less power and a shorter stroke. It complements a full-size saw rather than replacing it.