I have noticed that the newest power tool battery chargers have changed design
and moved the 120AV to DC low voltage “switching power supply” to the wall plug,
where it can be made more flame resistant cheaper because there is less material.

It also makes the larger Lithium battery holder where wet dirty human hands touch often free of 120V AC and lowers lethal shock risk.
Old design long wall cord that had 120 AC becomes lower DC voltage.

I am speculating their insurance companies made them make that redesign.