Is 1,600 Nm enough for truck lug nuts?

Yes for most light and medium truck lug nuts, which are typically torqued to 300–600 ft-lb. The rated 1,184 ft-lb is breakaway torque; tightening torque will be lower, so use a torque wrench for final tightening.

Does it come with a battery and charger?

That depends on the listing. Some SEESII kits include a 21V battery and charger and some sell the bare tool, so confirm what is in the box before ordering.

It uses a 1/2-inch square drive, so standard 1/2-inch impact sockets fit. Use impact-rated sockets only; chrome hand sockets can crack under this torque.

How does it compare with a compact 1/2-inch impact wrench?

It is bigger and heavier but delivers far more breakaway torque than compact models rated around 300–600 ft-lb. Choose compact for engine bay work and this for rusted chassis and wheel fasteners.

When is the price lowest?

Cordless tool prices usually dip during holiday sales and clearance events. Check the price history on this page and compare the bare-tool and kit versions, since the kit costs more.