Kobie Just a take note. The soldering iron do not like generator simulated sine wave power. It just become slightly warm, but do not get hot. Back on grid power or pure sine wave inverter, it works perfect. No damage from the short run on simulated sine wave standby generator. Thanks for that blessing.

Kobie Banggood refunded the one that does not work. I\'ve just uploaded a small video that showed the problem, and the refund, as always with a problem with a sick product was immediately processed. Top service, top people to do order from.

Kobie Isuspect that it is meant to be mounted inside a metal tube as in a flashlight. The center contact will make direct contact with the battery, and the two tabs on the side will make contact with the tube. I guess the switching is between the center and the two outside tabs witch may be connected together or common? Am I correct on my assumption?